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Title: The Master Spy
Author: Arthur Gask
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Language: English
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------------------------------------------------------------------------

Title: The Master Spy
Author: Arthur Gask

============================================

Published in The Advertiser, Adelaide, S.A., in serial form commencing
Wednesday 21 October, 1936.

Also published in The Courier Mail, Brisbane, Qld. commencing 7
November, 1936, and in the Advocate, Burnie, Tas., commencing 18 June,
1938, and also in book form by Herbert Jenkins in 1937.

============================================



CHAPTER I.--"BY THE DARK NORTH SEA"


"But I tell you, you have been marked down, Herr Mitter," said Dr.
Gottlieb sternly, "and that word has reached us from several quarters
that you are now under the suspicion of the authorities. I have made
this special journey to warn you."

It was toward 9 o'clock upon one stormy summer night, and two men were
conversing together in the low, oak-panelled and beautifully furnished
room of an old house perched high upon a lonely stretch of cliff upon
the coast of Suffolk, between the towns of Aldeburgh and Southwold.
Glasses, spirits and a syphon had just been placed before them and the
soft-footed butler had glided noiselessly from the room. Had the
curtains of the long windows not been closely drawn, under a fitful moon
could have been seen the heaving waters of the dark North Sea. The sound
of the waves came up faintly into the room.

The speaker stirred uneasily in his chair and went on--"Yes, you have
blundered, for at Whitehall, as you have always aspired to be, you are
now in the way of being regarded"--there was rising anger in his
tone--"as the master spy. Poachim writes us you are under the closest
surveillance possible."

The smiling and good looking man he was addressing, seemed amused. "And
when I tell you, my dear doctor," he laughed softly, "that that butler
who has just left us is in the pay of the British Secret Service and
indeed has been so for upwards of six months; that all my letters are
opened before I receive them and that as a matter of daily routine my
telephone is listened into--you will realise how closely I am beset." He
made a grimace. "I regret to mention also that, at the local exchange
here at Saxmundham, the two very charming young women, whose special
duty it is to attend to all calls made and received at this house, are
both of our own nationality, one of them being a graduate of a
university and speaking four languages"--he threw out his hands in a
gesture of mock despondency--"strangely enough, the only four of which I
have myself any knowledge."

The eyes of Dr. Gottlieb burned like coals of fire. "And knowing all
this," he gasped, "you are yet continuing to carry on and risking that
they may pick up all the threads of our organisation!" He looked
furious. "It is ruin. It is a catastrophe. It is almost treachery on
your part."

"Treachery!" exclaimed Mitter, his eyes now blazing too. "You apply that
word to me!" And then suddenly his features relaxed and his face broke
into a pleasant smile. "No, no, Herr Doctor, there is no need for you to
distress yourself. I am not quite a fool and I assure you my work in no
way suffers because I am being watched." He shook his head emphatically.
"They know nothing of our real organisation but are only being spoon-fed
with discoveries of no importance to us at all." He looked scornful.
"Suspect me, they undoubtedly do, but still they are learning nothing. I
do not allow them to, and so confident that every one of my agents is
under observation, they are under-estimating my activities in--to
them--a most shocking way." He snapped his fingers together. "Why, every
day I am driving a coach and four through the cordon they have drawn
round me and carrying on as if there were no such organisation as the
British Secret Service."

But his companion seemed in no way assured. "And how can you determine
the extent of their knowledge?" he asked sharply. "You may be living in
a fool's paradise all the time!"

Herr Mitter spoke with the patience of one humoring a little child.
"Come, come, Doctor," he said persuasively, "if you are being served
well enough to learn from the several sources you say you have, that I
am suspected at Whitehall, have you learnt also that any of the special
agents I am employing have been given away." His voice took on a
sarcastic tone. "To mention only a few, have you learnt for instance
that Mendel has been dismissed from Devonport Harbor, that Hern has lost
his job at Chatham Dockyard that Krootz is no longer working on their
super-submarines, or that Captain the Honorable R. T. J. Nathanial has
ceased to be a trusted member of the staff at the Admiralty." He spoke
slowly and impressively. "Have you heard now that suspicion has fallen
on any of these men? And yet I can furnish the most convincing
proof"--his voice was little above a whisper now--"that I am in almost
daily communication with each one of them." He leant back easily in his
chair. "Come now, be fair and just with me. Have you heard anything
about any of these men?"

Dr. Gottlieb hesitated. "No-o," he admitted grudgingly, after a long
pause, "we have had no ill news there, as yet."

Herr Mitter laughed gaily. "As yet! And I should think not!" He went on
quickly. "And have you ever found that any of the information I have
supplied to you was not reliable?" He slapped the table before him with
his hand. "Did you not verify what I told you was going to happen, a
week before--that the Admiralty had made secret trials of their new
bombs upon the battleship Ajax, those hundreds of miles north of the
Orkney Isles? Were you not forewarned that Sir Charles Montressor and
his chief of staff were meeting the heads of the French army at Nancy at
midnight upon the twelfth of last month? Have you not had the complete
specifications of their new McHenry Torpedo, a torpedo infinitely
superior to any of ours? Did you not learn----"

"Yes, yes, I admit all that," interrupted Dr. Gottlieb testily, "but you
may not have been under suspicion then? Those are things of the past."

"Things of the past!" exclaimed Mitter. "The very recent past!" His good
humor appeared to return and he became all smiles again. "But I know I
have been watched for months and months and it has made no difference,
for as I say, I have eluded them in all big matters and in trivial ones
only, have allowed them to discover what they could." He nodded. "These
petty discoveries of theirs have been my security, because they are
thereby quite satisfied they are controlling all the channels of my
enquiries."

"But which of the men working for you have they got to know?" asked Dr.
Gottlieb with a frown.

Mitter laughed again. "A few who are quite useless to us; Witten who
potters round the harbour of Sheerness asking foolish questions of all
he meets; Van Rime who takes photographs with a pocket camera at
Devonport; Joseph who hangs round the War Office, tapping the private
lives of the junior clerks there, and the Scotchman, McBean, who
receives 4 a week from me to become very drunk, hobnobbing with sailors
in the lowest public houses of Portsmouth." He chuckled in amusement.
"And these fellows address letters to me here that are opened before I
get them, and copies of which are undoubtedly filed as valuable treasure
trove at the counter-espionage headquarters in Whitehall."

"Well, what are your methods then?" asked Dr. Gottlieb after a long
pause. "How do you manage to carry on?"

Herr Mitter shook, his head. "No, no, Doctor, as you know, our people
have given me a free hand and I prefer to keep my own counsel. I can
trust no one with my secrets, not even you"--he smiled ironically--"for
with the changing fortunes of all in our beloved country, who knows how
long you may hold the position you now do?"

Dr. Gottlieb ignored the last remark. "But it is a great responsibility
for one man," he said slowly, "and if you are not equal to the task, I
tremble to think what may be the consequences when The Day comes again."
He hesitated a moment. "You might, too, take offence for some reason and
become lukewarm to the cause." He eyed him intently under heavy brows.
"We have no hold upon you, for, as a rich man, money is nothing to you,
and I know you are receiving no remuneration for your services."

"No, you have no hold upon me," commented Mitter dryly, "but who should
know better than you that none is necessary." He bent forward and
lowered his voice to the merest whisper. "You are one of the few who
have been told who my father was. Do you forget then that he was shot at
the Tower and that his bones lie somewhere in some shameful and
unhonored grave?" His voice vibrated passionately. "Am I not myself the
son of a spy, and when the report of those rifles rang out in the dawn
of that September morning of nineteen fourteen, should not my life have
been sealed automatically for vengeance against the country of those who
killed him?"

He rose suddenly to his feet with a gesture of impatience. "Add to my
hatred of England then, the other obsession of my life--that one great
fatherland should fulfill its destiny and become one day the conqueror of
the world, and you have no need for any warranty that I shall not be
faithful until death." He smiled bitterly. "I do not forget either, that
my beloved mother died of her broken heart in a concentration camp in
this country, and I have her, too, to avenge."

There was sympathy now in Dr. Gottlieb's expression, and he smiled for
the first time. "Good!" he nodded, "then we can trust you, I am sure."
He shook his head. "But it was disturbing to receive those reports that
you were under such suspicion."

Mitter shrugged his shoulders. "And whose fault was that? Was it not
your own man, Lieder, who betrayed us? He was never my choice, but was
passed on to me by you, as a trustworthy man. Happily, I took a dislike
to him at once and never admitted him to my inner circle."

Dr. Gottlieb nodded again. "Well, he is dead now, and I understand his
punishment came quickly."

Mitter spoke sharply. "Yes, he died in this room, and maybe in that very
chair in which you are now sitting." He pointed to a cluster of old
weapons upon the wall. "I killed him with that stiletto there, stabbing
him in the back as I passed behind him to get some cigarettes. No, no,"
he went on with a smile, as the doctor turned to glance apprehensively
round the room, "there were no shadows then to receive his ghost, for he
was killed on a bright and sunny afternoon."

"In broad daylight?" gasped Dr. Gottlieb, "and with people about!"

"Certainly," replied Mitter calmly, "for there were even pretty girls
playing tennis just outside. I heard the pings of the balls against the
racquets as I was choking him so that he should not cry out." His face
clouded at the memory. "He arrived at a most inconvenient moment, but I
was obliged to seize the opportunity while he was here. I am sure he
would never have come again, for I saw from the expression in his eyes
that he had suddenly become suspicious of me."

"But his body!" ejaculated Dr. Gottlieb. "How did you get rid of it?"

Mitter pointed to a door leading out of the room they were in. "I hid it
there in my bedroom, in a cupboard, and for two nights slept with it
only a few yards away from my bed. I could not get rid of it before,
because of the moon. Later"--he nodded in the direction of the window
and spoke with some feeling--"it was given to those waters that will one
day bear our transports when they come to conquer this proud and
stubborn people."

"But did no one know the man had not left the house?" asked the doctor.
"What were the servants doing?"

"Serving tea upon the lawn," replied Mitter. He laughed lightly. "And
Herr Lieder disposed of, I washed my hands and went out to resume my
interrupted game with our Chief Constable, Colonel Wedgewood." He looked
very pleased with himself. "I was steady as a rock and beat him easily."

A short silence followed, and then Dr. Gottlieb asked thoughtfully, "And
does the knowledge of the fact that you are being watched make no
difference to the carrying out of the routine of your daily life?"

Mitter shook his head emphatically. "None whatever, and as long as I act
as if I had no such knowledge, I feel assured I shall be quite safe.
Whitehall is undoubtedly hoping to pick up all the threads of our
organisation through me, and in consequence will leave me alone to the
very last moment they can." He shrugged his shoulders. "I know I am
sitting on a gunpowder mine, but I don't think I shall be here when it
explodes." He waved round at the beautiful old oak-panelled walls and
sighed heavily. "I could not be in more delightful surroundings, yet 48
hours before our aeroplanes come over to bomb London, I am quite aware I
shall have to give them all up. Until then, however," he smiled, "I
shall enjoy them with no worry upon my mind."

"But in what way do the people over here regard you," asked Dr.
Gottlieb, his smile was very grim--"as an individual of our hated race?"

"Oh! Personally, we are not hated over here in England," replied Mitter
quickly. He spoke rather contemptuously. "Britishers have not the
temperament for a lasting, virile hate, and although they are nearly all
of opinion we are going to drop poison gas upon their civilian
population one day, there is no anticipatory resentment about it. No, my
social status here could not be better, and I mix with the best county
people. I am just regarded as a well-to-do, and perhaps rather
eccentric, foreigner, who prefers this country to his own. As you know,
painting is supposed to be my great hobby, and I have a beautiful studio
here. I am not without some talent either, and there is a sea-scape of
mine in the Academy this year." He nodded significantly. "As for my
other life and the work I am doing for the fatherland--well, I have
resources that no one would suspect."

"Ah! but one slip," commented the doctor gravely, "one little slip,
and----"

"There will be no slip, big or little," interrupted Mitter sharply, "and
make your mind easy about that." He punctuated each word with his hand.
"Remember, nothing is done from this house that in any way touches my
real work; no trail of any of my activities can be picked up here, and
as Carl Mitter"--he laughed merrily--"I am no master spy." He threw out
his hands. "Indeed, I am no spy at all, but just a clumsy bungler who
makes happy the British Secret Service, because they discover so easily
my little vain attempts to find out what is going on."

"But I wish you would give me some idea of how you carry on," frowned
Dr. Gottlieb, "for I could then take back to our people a more
reassuring report. I know, of course, that no communications of any
important nature are sent to you here, and that you yourself compose the
letters we write for you to receive at the house, still----"

"Have patience, Doctor, and tell them at home to have patience, too,"
interrupted Mitter. "I am doing the work you have entrusted to me, and,
with no boasting, am doing it well. So be content with that. I cannot
tell you what my ways are, for if my secret were once disclosed to you,
you would have to pass it on, and it might get into wrong hands.
Remember, if we are spying here, the British, are also spying among you,
too, and we never know how highly placed our own traitors are." He shook
his head. "No, if I told you everything, my confidence in myself would
be gone, and I should no longer feel I was secure." His voice swelled in
triumph. "Now, my confidence is absolute, and pursuing the way I am I
know I have got the famous British Secret Service tied in a knot they
can by no possibility unravel."

A long silence followed, and then, as if resigning himself to the
inevitable. Dr. Gottlieb turned his thoughts in another direction, and
glancing curiously round the room, apparently took in its beautiful
furnishings for the first time. "Yes, you certainly have a nice place
here," he remarked, "and that panelling must be very old."

"Two hundred years and more," replied Mitter with the enthusiasm of a
connoiseur. "This house was built in the 18th century and there are
ruins, just outside, that go back for nearly a thousand years." He rose
from his chair and leading the doctor over to one of the windows, pulled
aside the curtain. "See, those are the ruins of a Franciscan Priory
whose foundations were laid in 1254, when a branch of that great order
had its headquarters here." He pointed out to sea. "A score and more of
churches, moreover, are supposed to be engulfed there, and upon stormy
nights the villagers say they can even hear the clanging of the bells.
This little hamlet of Dunwich was a big town once, with a large
important harbor, but the sea is for ever encroaching and now a few
scattered habitations are all that remain. Within living memory this
very house of mine was three hundred yards from the sea, and yet tonight
a bare sixty or seventy yards separate it from the waves." He sighed.
"If I had any children they would live to see it topple over the cliff."

Then suddenly the sound of a car was heard outside in the drive and a
few seconds later the bell of the front door whirred.

Mitter looked frowningly at his watch. "Ten minutes past ten and another
visitor!" he exclaimed. "What's happening tonight?"

They heard voices in the hall and then the door of the room opened to
admit a smart and very good-looking parlormaid. "A gentleman to see you,
sir," she announced, "a Mr. Smith. He says he's very sorry to trouble
you so late, but he won't keep you long. I've shown him into the morning
room."

"Has he come alone, Margaret?" asked her master quickly.

"Yes, sir, he's driving himself in a limousine."

"All right," nodded Mitter. "I'll go and see him in a minute." Then when
the door had shut behind the girl, he turned to Dr. Gottlieb. "Excuse me
a minute or two will you. I'll go and see what the man wants."

"But where's that butler of yours?" asked the doctor uneasily.

"Oh! He's always allowed off duty at nine," replied Mitter, "to go for a
walk and get some fresh air." He grinned. "But I expect tonight he's
writing up a description of you and your car to give to the postman the
first thing in the morning." He laughed. "I've got hold of some of his
letters and they are very crude and inaccurate stuff, so I expect he'll
be describing you as handsome and aristocratic-looking, with a furtive
and secretive air."

He left the room still smiling, but once in the hall his expression
changed. "Smith, Smith," he muttered. "I don't know him, but, of course,
most probably that's not his real name."

He opened the door of the morning room to see the tall and closely
muffled figure of a man standing in the middle of the room. The man was
wearing his motor-goggles, but directly he saw who had appeared, he
pulled them off and began quickly to uncoil the scarfe about his neck.

"The Ambassador!" ejaculated Mitter under his breath, "the haughty Count
Von Rieben himself."

"Quick!" whispered the man, beginning to unbutton his overcoat. "Whose
car is that outside? Who is your visitor?"

Mitter was all smiles. "It's quite all right, Count," he replied. "He's
Herr Gottlieb, who has flown over to have a little talk with me."

"Dr. Gottlieb!" exclaimed Von Rieben frowningly. "What's he come for?
Has anything gone wrong?"

"No, nothing," replied Mitter reassuringly. "He's only come to give me
some news of which it happens I am already aware; pure routine business
and of small interest." He went on quickly. "But you yourself, what has
brought you here? It must be something important, of course?"

"Yes," snapped the ambassador, "most important." He hesitated a moment.
"But as Gottlieb is here he may as well hear it at the same time. In
fact, his being here is quite opportune and may save me a long
despatch." He lowered his voice again. "But where's that damned butler
of yours? As he didn't open the door to me, it may be just as well he
shouldn't see me."

"Oh! Dempster's out, or in bed," replied Mitter airily, "but in any case
you shan't meet him. Come into the library where the doctor is," and
pausing for a moment to make sure there was no one about, he led the way
across the hall.

With every appearance of annoyance, Dr. Gottlieb jumped scowlingly to
his feet, as they entered the library, but then recognising who it was
who was accompanying Mitter, his expression at once changed.

"His Excellency!" he exclaimed looking very surprised. "But this is a
great pleasure!"

Von Rieben advanced and shook hands. "Not so much of a pleasure," he
growled, "when you've heard what I've got to say." He peered hard at
Gottlieb. "But you've brought no bad news, Herr Mitter tells me?"

The doctor shook his head. "No, our friend assures me that everything is
going well and that the little scraps of information I have been able to
furnish are no news to him at all."

Von Rieben seated himself at the table and, almost in one gulp, drank
off the brandy and soda Mitter had mixed for him. Then he said sharply.

"Well, my news is not good," and his handsome face puckered into a dark
frown as he blurted out:--"They've beaten us, these damned Britishers!
They've got an invisible aeroplane!"

His listeners made no comment. Dr. Gottlieb regarded him wonderingly and
Mitter stood frowning, with his mouth half open.

A deep hush filled the room, and, for a long minute, almost the falling
of a feather could have been heard. Then, as if angered by the silence,
Von Rieben burst out again. "An invisible aeroplane, I tell you! Don't
you take it in?"

Mitter found his voice. "What do you mean?" he asked. "I don't
understand you. What do you say they've got?"

Von Rieben laughed bitterly. "An aeroplane that you can't see, man. A
plane that's invisible until it drops within 50 yards of you, and one
that's almost noiseless as well." He ground his teeth viciously. "It's
the greatest invention since aeroplanes came, and will give Britain the
whip-hand over everybody else. No nation would dare fight her now."

"An invisible aeroplane!" ejaculated Mitter incredulously. "And you've
seen it?"

"Been within 30 yards of it," scowled Von Rieben. "Seen it taxiing along
before us like a grey shadow, seen it dart up into the sky and fade away
like one, seen an enormous Union Jack trailing round and round a
thousand feet up with nothing to show what was dragging it along." He
looked contemptuously at Mitter. "You're an efficient director of our
secret service, aren't you, to let an invention like this be sprung upon
us and not to have had the slightest inkling of what was going on?"

"But how have you come to find out about it?" asked Dr. Gottlieb
gruffly. "Let Mitter, here, learn how it is that you are before him."

Von Rieben calmed down. "I was shown it this afternoon," he said with a
grim smile, and speaking very slowly so that every word should be taken
in, "along with the representatives of nine other embassies, by special
courtesy of the British Government. We were all motored separately to
the Newmarket racecourse and taken on to the balcony of the Royal Box on
the grandstand there. We had not been told what we were going to see,
except that it was something that would be of great interest to our
respective Governments, and until we began to assemble there it appears
each one of us had imagined he was going to be the only favored one." He
heaved a deep sigh. "Then this damned aeroplane was brought out and we
were struck almost speechless in our astonishment. It was----"

"But why did they show it you?" interrupted Dr. Gottlieb sharply. "What
was their idea?"

Von Rieben nodded vehemently. "To convince us of the undesirability of
going to war with them, of course; to make us realise that this
invention put all other countries at their mercy and that as long as
they alone possessed its secret, peace at any price must be the policy
of the whole world." He scowled. "Before the damned thing appeared the
Prime Minister made a speech to that effect, when he had told us what we
were going to see."

"But let us know exactly what happened," said Mitter with some
irritation, "and we can judge then what this plane means." He looked
towards Dr. Gottlieb. "Don't forget the doctor took his degree in
physics and chemistry, and he'll tell at once if there's any practical
value in the discovery."

"Oh! I'm not exaggerating," said Von Rieben sharply. "This aeroplane is
a stroke of genius and gives Britain the complete mastery of the air.
They could drop their bombs anywhere without any interference and
everyone would be completely helpless."

He paused a moment. "Well, what exactly happened was this. Last week
Lord Rodney himself rang up and asked me to keep this afternoon free,
and today after lunch that Colonel Lendon, of the Air Service, called
for me in a car and I was driven down to Newmarket. Then, as I say, I
was taken up to the Royal box on the grandstand, and within a few
minutes, to our mutual astonishment, the representatives of nine of the
great Powers found ourselves assembled there. On the lawn in front were
nearly all the members of the British Cabinet, along with the chief
departmental officers of the army, navy, and air services. As we were
ushered into the box we were all handed a pair of powerful Zeiss
glasses."

He scowled angrily. "Yes, and all the time with all their extreme
politeness, the damned Britishers were grinning as if they were on to
some good joke. We could see they could hardly contain themselves in
their amusement. Then the Prime Minister made the preliminary remarks I
have told you, and pointing to a long wide stretch of scarlet canvas,
spread on the racecourse before us and extending for about two hundred
yards, looked at his watch and announced that the first plane would
arrive in four and a half minutes and land in front of us."

Von Rieben mimicked a deep base voice. "It is now passing over
Huntingdon, gentlemen, twenty-five miles away, but as its speed is
upwards of three hundred miles an hour, I promise you it will be here to
time. It will sound a syren and circle round us before landing."

The Ambassador stopped speaking and it was obvious he was struggling
with some emotion. After a few moments, however, he went on:

"Well, there we stood in a strained and uncomfortable silence. I felt
suffocating, and suddenly realised that I was holding my breath. We were
all affected, and I saw old Ahsberg had bitten his lip until the blood
had come. Then far away we heard a syren sounding, and Lord Rodney
called out excitedly. 'Up with your glasses, gentlemen; it's coming from
over there,' and he pointed across the heath."

Von Rieben cursed deeply. "But we could see nothing except the blue sky
and some wisps of cloud that were trailing across. The sound of the
syren, however, became louder and louder, and then it seemed to be
screeching all round us. Then there was one final tremendous wailing
blast, and, my God!"--he spoke with an effort--"down upon the scarlet
canvas streaked a long, grey shadow. It stopped in less than a hundred
yards, and there before our very eyes was a huge and almost transparent
aeroplane. We could just very faintly discern the outline of its
fuselage and wings." He struck his fist angrily upon the table. "Then
out of it jumped four men. Three of them stood rigidly to the salute,
while the fourth played the first bar of the British National Anthem
upon a bugle." He sneered "It was intended to be most dramatic."

"But what was the plane made of?" asked Dr. Gottlieb, hoarsely.

Von Rieben shrugged his shoulders. "Heaven knows! Some kind of glasseous
substance, of course, but it was more transparent than glass, and even
the propellers were made of it. The fittings also were nearly
transparent, and Ahsberg, who once ran some armor plate works in Vienna,
was of opinion they had been fused on. He said, too, he was sure that
the fuselage had not been cast in one piece, but was built of a series
of plates fused together, and that he could discern the shadowy lines
where they had been joined."

"Did you go close up to it?" asked Mitter.

Von Rieben scoffed. "They didn't give us the chance. We were prisoners
in that Royal box, with thirty yards of the Royal enclosure separating
us from the racecourse rails."

"But the men!" exclaimed Mitter "You must have seen them through the
fuselage before they jumped out! They couldn't have been transparent!"

"Oh! we saw them right enough when the plane was slowing up," replied
von Rieben sourly, "but by some means even their forms were partly
obscured." He looked scornful again. "But a lot of chance you'd have of
picking up grey figures in a machine travelling at 300 miles an hour."

"What type of plane was it?" asked Dr. Gottlieb.

"I don't know. I'm not an expert," snapped von Rieben. "All I could see
was that it was a large bomber." He went on--"Then Lord Rodney looked at
his watch again and announced that more planes were upon their way, and
within five minutes three others had dropped down and taken their places
behind the first one. The same shadows, swooping down like ghosts and
practically without a sound. We were allowed to stare at them for a
little while, then enormous Union Jacks were attached to their
under-carriages, the bugle was blown again, and off went the four planes
all together. They hardly made any noise, left the ground within 70 or
80 yards, and then we lost sight of everything, except for the trailing
flags that seemed to rise almost vertically into the sky. Then for five
minutes those flags were whirling about above us--with the dragging
planes, however, quite invisible to our glasses--until finally they were
dropped exactly in front of us, almost one on top of the others." He
shook his head savagely. "The execution of everything was faultless, and
I can conceive of a no more masterly exhibition."

"And that finished everything?" asked Mitter.

Von Rieben was stirred instantly to renewed animation. "No, no, our
mortification was not over yet. A sheet of the material used was held up
close to us. It was about three feet square and certainly not more than
half an inch thick. Then it was laid upon the grass just below, and a
big burly mechanic struck at it a score of times with a huge sledge
hammer. Nothing happened, however, and he might have been striking at a
sheet of the strongest steel. Then the glassy sheet was propped up ten
yards away, and from a hundred and more cartridges upon a tray any one
of us was invited to pick out which ones we liked and fill the magazine
of a heavy service rifle that was handed up. Then I emptied the
magazine, firing point blank at the damned sheet. Then the sheet was
handed up again for our inspection." He gritted his teeth together. "Not
a sign of a mark or crack anywhere!"

"Faked cartridges!" suggested Dr Gottlieb with a frown.

"Faked fiddle-di-dee!" scoffed Von Rieben, "for the show was not over
yet. A sheet of steel was next passed up to us--we were allowed to
handle that and try to scratch it with a file. The sheet was about the
same size as the other sheet but so heavy that it took two of us to lift
it comfortably, for it was a good inch thick. Then it was propped up
where the other sheet had been and Ahsberg choosing the cartridges this
time, I emptied the magazine again." He spoke in an awed whisper. "Every
bullet drilled a hole through."

A long silence followed and then Dr. Gottlieb asked thoughtfully, "Was
the glass-like sheet heavy?"

"No," snarled Von Rieben. "Lord Roding lifted it up and waved it about
in one hand."

"But what was it like to look at?" asked Mitter.

"Almost as if he'd got nothing in his hand," replied the ambassador,
"glass of very poor quality and very thin." He shook his head angrily.
"There's no getting away from the fact that they've got hold of
something no one's ever heard of before, a glass as transparent as air
and tougher and harder than anything we know."

"And what happened next?" asked Dr. Gottlieb.

Van Rieben laughed mockingly. "Congratulations all round, champagne and
sandwiches of caviar, and then good-byes as if we were all the best of
friends."

Herr Mitter turned to Dr. Gottlieb. "But in your opinion, Doctor," he
asked quietly, "except for what his excellency has just been telling us,
as a onetime professor of physics, can you conceive it possible that an
almost invisible material of such hardness as that sheet he has
described can exist?"

Dr. Gottlieb hesitated. "It is just a matter," he said slowly, "of
finding some substance whose refractive index can be made the same as
that of air; something that will absorb hardly any light, and refract
and reflect very little either." He nodded. "Remember, a sheet of white
glass vanishes altogether when it is placed in water." He hesitated
again and shook his head. "But, no, I could never quite imagine any hard
substance being invisible in air."

"Well, you'll have to imagine it now,"' commented Von Rieben sharply,
"for it exists and I have seen it with my own eyes."

"Still, whatever you gentlemen saw today," went on the doctor drily, and
as if nettled by the curtness of Von Rieben's tones, "you will have
great difficulty in convincing others that such a thing as an invisible
aeroplane can really exist. The world will remain sceptical and----"

"Oh! will it?" interrupted Von Rieben unpleasantly. "Then it won't
remain for so long, for three weeks today another demonstration will be
given, and this time everyone can go who likes. An invitation is being
broadcast to all the Governments of the world, inviting them to send
their scientific men and the leading representatives of their press. I
tell you there is going to be no secrecy as to the discovery, and the
widest possible publicity is to be given."

"But where's the next demonstration going to take place?" asked Mitter
quickly.

"At Newmarket, where it did today," replied Von Rieben, "and special
trains are to be run for all who don't go down in cars." He sneered.
"Britain is determined we shall be all shown how helpless we are."

"Well, we shall be helpless only," scowled Dr. Gottlieb, "until we get
hold of a piece of the material they use, and then"--he snapped his
fingers--"the secret will speedily be no secret at all."

"And how are we going to get hold of a piece?" asked Von Rieben
derisively. "They are not going to pass round bits as souvenirs." He
turned suddenly and looked with great sternness at Mitter. "But now
then, my friend, your department has been costing us a huge sum every
year, and so you just tell me straight away where those aeroplanes are
being built. Quick now, for you must have----"

"But you can't expect Herr Mitter to learn everything that is going on,"
broke in Dr. Gottlieb, still in annoyance at the ambassador's truculent
tone. "The British can hide a lot of what they're doing in exactly the
same way that we can, and----"

"Damnation!" exploded Mitter with great suddenness. "I have it. They're
making the stuff on Foulness Island, just off the Essex Coast!" He
nodded violently. "Yes, that's it, and for all these months they've been
blinding us into believing they were experimenting with explosives
there. There have been explosions going on day after day." He smiled
triumphantly at Von Rieben. "Yes, your excellency, I can tell you what
you want to know. They are assembling these aeroplanes either in
Cardiganshire or Caithness, on the prohibited Government areas there,
but, as I say, the material they are using is being manufactured upon
Foulness Island."

"But how do you know that?" asked Von Rieben, looking very astonished.

"Because of the extraordinary precautions that have been taken for the
best part of a year now that no one should approach the island," replied
Mitter excitedly. He tugged open a drawer in his desk and producing a
large ordnance map spread it out upon the table. "See, this is Foulness
Island and it has been one of my special objectives for a long time now,
indeed so much so, that I have a man stationed permanently at
Burnham-on-Crouch to try to find out what is going on."

He calmed down all at once and continued in quiet and business-like
tones. "Now listen to what I can tell you. This Foulness Island had
always been a dreadful place to get to because the only approach to it
is by a road over the Maplin Sands, only available at low water. The
island, as you see, is five miles north-east of Shoeburyness and is cut
off from the mainland by the river Roach and a wide deep creek. On the
seaside, the tide recedes for more than five miles to the Maplin Light."

"Well, a little less than a year ago, the whole of this island was
forcibly acquired by the Government, the land owners being compensated
and the entire population turned off. After then no persons, except
Government workmen were allowed anywhere near. Deep stretches of barbed
wire were thrown all round the island, flanked by embankments about
twelve feet high. Then in a few weeks a big factory had sprung up, but
in such a position that no one on the mainland can get within two miles
of it. Also a huge, and partly underground aerodrome was constructed."

He nodded significantly. "Everything was done at express speed and we
reckoned that at one time more than a thousand men were being employed.
Every day at low tide there was an almost endless procession of huge
lorries along the road over the sands. Then suddenly, with the factory
and the aerodrome completed, this road was closed with more barbed wire
entanglements, the island was completely isolated, and for many months
now there has been no communication except by plane."

"But have they no kind of dock there?" asked Von Rieben.

"No, and not even a landing stage. The seaside of the island is as
deeply wired as the land side, and as far as we can make out with the
most powerful glasses, there is only one single opening leading on to
the sands. I tell you every scrap of material for the factory and every
scrap of food for the workmen is now being carried on to the island by
planes."

"But don't any of the workmen ever leave the island?" asked Von Rieben.

"Undoubtedly, I should say!" replied Mitter. "But it's all done at night
in tremendously fast planes and we have never been able to find out
where they land. We wanted, of course, to try to get in touch with one
of the men." He turned to Dr. Gottlieb. "But look here, Doctor! Could
they make glass out of that sand by the island?"

"Certainly," replied the doctor, "if they got the salt out of it,
first."

Mitter threw out his hands. "Well, there you are. They've got the
material they want on the very spot."

In low voices they talked on for a long time, with Von Rieben irritable
and restless, Dr. Gottlieb very thoughtful and only Mitter, apparently,
easy in his mind.

"Well, never mind," said the last, confidently, "it can be only a matter
of a little time before we've got hold of a piece of that glass and are
making it ourselves." He nodded. "With all the amount of material they
must be manufacturing now and with the hourly increasing number of hands
it must be passing through, we shall soon find someone to give them
away."

"You must find that someone quickly," scowled Von Rieben, "for when we
are ready, we can't go on keeping everything up to concert pitch
indefinitely." He shook his head angrily. "I had hoped that within
twelve months we should have been over here." He turned to Dr. Gottlieb.
"Well, it's gone 1 o'clock a long time ago now, and you'd better follow
back behind me. We will find out then if anyone is attempting to trail
us. We'll go by way of Bishop's Stortford, so that if anyone has been
given the office to pick us up as we enter town by the main road, we'll
be able to give them the slip."

Ten minutes later and the house was all in darkness save for the one
shaded light over Herr Mitter. He was deep in the pages of the London
Directory and feverishly jotting down the names of those firms in the
city who were makers of plate glass.




CHAPTER II.--DISEASES OF THE SKIN


Dr. Smith had a suite of professional Chambers in the huge block of
buildings known as Moon Buildings, upon Finsbury Pavement, and according
to a notice, among some many scores of others, upon the wall of the
vestibule, his speciality was 'Diseases of the Skin.'

If you had looked in the Medical Directory you would have seen that his
Christian names were Raymond Colin, that he was a Doctor of Medicine of
Edinburgh University, and that he had taken his degree in 1884. So you
would naturally have assumed that he must be an old man, well over
seventy, and therefore of considerable experience in his profession.

But it happens you would have been quite mistaken, for this particular
specialist in diseases of the skin had, indeed, never seen the inside of
a hospital, except once, when, as a small boy he had had his leg broken
in a street accident in Leeds; and again, too, seventy years previously,
his mother had not as yet been born.

He was, however, practising with the diploma of a Dr. Raymond Colin
Smith who had died some seven years before, in what had at one time been
known as German East Africa, and as the defunct doctor had had no
relatives to mourn his loss, and no one interested in his private
affairs, and as, moreover, his handwriting had been easy to imitate,
news of his decease had not reached the Registrar of the General Medical
Council in London.

Still, if he had had no proper medical training and no qualified
experience in his adopted profession, this pseudo Dr. Smith must,
nevertheless, have been something of a clever fellow, for with the
knowledge acquired from the study of half-a-dozen or so of old and
musty-looking volumes upon a shelf in his consulting-room, he had
undoubtedly relieved the troubles of not a few bad skin sufferers.

One of the lift-men in the building, for instance, thought the world of
him, for had he not cured this lift-man's wife of a form of weeping
eczema, when two other practitioners had been able to do nothing for
her?

In consequence, this grateful husband had recommended several patients,
and would have recommended many more had not the doctor been so high in
his charges. Indeed, it almost seemed as if Dr. Smith were desirous of
choking off patients by charging them so much, and, further still, the
very irregular nature of his attendances at his consulting-room drove a
lot of people away, for upon very many mornings would-be patients, after
waiting an hour and longer for him to put in an appearance and there
being no sign of him, had gone off grumblingly to obtain the services of
someone else.

The doctor employed no nurse or female attendant, but upon those days
when he did consult at his chambers, he was always preceded by a man by
name of Jasper, who used to open the windows and air the rooms, and
later in the day this same man would return to do the tidying up when
Dr. Smith had gone.

Even by sight Dr. Smith was known to very few of the other tenants, for
his rooms being upon the first floor he seldom used the lift and, as
there was a second entrance into the building from Fore street, the
chances of anyone encountering him were diminished by half. His comings
and goings, therefore, would at all times have been difficult to follow,
especially as the fourth room of his suite of chambers had a second door
opening into a different passage round the corner, thus enabling him to
leave unseen, even when, it might be, a would-be patient was actually
knocking upon his waiting room door.

His consulting-room was very plainly furnished with a shabby, faded
carpet covering the floor. It contained a desk, three chairs, an old
surgical couch, a microscope upon a small table, some dirty test-tubes
in a stand, the few books we have mentioned, and a dusty pile of
out-of-date medical journals in a corner.

The doctor himself certainly did appear to be an old man, well up in
years, for he stooped a lot and was most slow and deliberate in all his
movements. He had long, grey hair and a grey beard that hid from view
any collar he might be wearing. He had big bushy eyebrows and wore
large, broad-rimmed, dark glasses.

When a patient was consulting him he spoke in tones hardly above a
whisper. Then he looked very grave and solemn, nodded many times, and
always had recourse to a huge magnifying glass when he was examining any
spots or rashes. He hummed and hawed a lot in his diagnosis, and was
never inclined to give a very decided opinion. He asked everyone if
there was any consumption in their family, and indeed seemed always to
suggest that the ancestors of all who came to him must have been
suffering from unpleasant and unpopular diseases. His one unvarying
prescription was for a paste of vaseline and oxide of zinc, and he
always advised every patient that fine oatmeal should be used for
washing with, instead of soap. He whispered, too, the injunction to
drink plenty of water and avoid greasy foods. He never encouraged anyone
to come again.

In addition to the consulting room, three other rooms comprised the
suite; a waiting room that contained a table and half a dozen chairs; a
small room with a sofa, a cupboard and a large safe let into the wall;
and finally, there was a much smaller room, with a gas stove, a few
cooking utensils, and some plates and cups and saucers. It was this last
room that had the second door opening into the other passage.

His man, Jasper, was about forty years of age, and was always dressed
quietly like a gentleman's servant. He was cold and reserved in manner,
but for all that, upon occasions was not averse to stopping for a little
chat with the lift-man.

"The only thing regular about your governor," said the latter one day,
"is the time he goes out for his lunch. One o'clock to the tick and he's
always ready for his feed. Where does he live? Is it far from here?"

"He's got a flat in Fitzroy Square," replied the servant, "and I look
after him. He's no trouble, for all he does is to read and write."

"Well, he certainly doesn't bother much about the practice here,"
remarked the lift-man, and then he added curiously, "but he gets a lot
of letters. Do you know who they're from?"

"Mostly from other doctors," replied the servant. "They write to him for
advice from all parts of the world. He's got a great reputation."

One morning when Dr. Smith was consulting with an elderly woman who had
come to him about a rash upon her legs, he heard the bell of the
waiting-room buzz, and, as per invitation inscribed upon the door, the
footsteps of someone who had opened it and let himself in. The doctor's
eyes glinted as if he had recognised the footsteps, or as if a caller
whom he had been expecting had arrived, and with the hurried writing of
the prescription for the usual zinc oxide and vaseline, and the
stereotyped injunctions to use oatmeal instead of soap, and drink plenty
of water, he cut short the consultation and dismissed the woman.

Then, taking a small automatic pistol from one of the drawers in his
desk, and fitting a silencer on to it, he thrust it in the right hand
pocket of his coat. Then, after a careful but hurried scrutiny of his
face and hair in a small mirror, which he produced from another drawer,
he composed his features to their usual calm, and opening the
communicating door between the consulting and waiting rooms, invited the
new arrival to step in.

"Good morning, Mr. Leaver," he said in the low whispering tones he
always used. "I've been hoping you would come, for several days," and
closing the door behind him, he beckoned to his visitor to take a seat.

The man he had ushered in was quite young, and could not have been more
than six or seven and twenty. He was smartly dressed, and held himself
confidently. He had a good-looking and intelligent face, marred
somewhat, however, by a hard and bitter expression. His eyes and chin
spoke of courage and determination. Of quite a superior type, he was an
old Charterhouse boy who had once followed the profession of a chartered
accountant. Three years previously, however, he had been sentenced to
eighteen months' imprisonment for embezzlement. He had known Dr. Smith
for about a year. He looked at him now with a lazy smile, as if for some
reason he were rather amused.

"Well, any news?" asked the doctor eagerly.

The young man nodded. "Yes. I've had some luck this time. I've located
one of the men who's working there. His home's in Manor Park."

"Splendid," ejaculated the doctor, looking very pleased. "Then you
picked him up in the way I suggested?"

"Yes, and I was fortunate, for he came from the third firm I tapped,"
was the reply. "He was head blower in Wilkinson's Glass Works in
Spitalfield, and he took himself off at a moment's notice last March. I
palled up to one of their men as he was leaving work one night, and
pretended I wanted to know where a chap called Irons lived, who had once
been one of the foremen there. Of course the man swore I was mistaken,
and over a couple of pints, ran over all the men in good positions who
had left the firm this year. There were three of them who had suddenly
given notice, and no one knew what for."

Dr. Smith clicked his tongue triumphantly. "Exactly what I thought had
happened. The Government would, of course, engage the very best!"

Leaver continued. "This man only remembered where one of them lived,
however, and he was deuced hazy about that, only thinking it was
somewhere in Manor Park. This chap, he said, was a Tom Skelton and he
used to come to work on a motor bike. That helped me a lot, for I began
a round of all the garages in Manor Park and soon found one that used to
supply this Tom with petrol. That's how I came to get the exact
address."

"But how did you find out he is now working on Foulness Island?" asked
the doctor sharply.

"I suspected it at once," replied Leaver, "and now, after three days'
enquiry in his neighborhood, am quite sure. He's got a wife and two
children, but only comes home to them once a month and then, each time,
for five days. No letters come to the house through the post when he's
away, but his wife writes plenty, for she's always borrowing stamps from
the neighbors." He nodded. "In passing, my idea is she goes and calls
for letters somewhere. Well, she tells everyone her husband is working
in Birmingham, but when asked where, she always says she can't remember
the name of the firm."

"Go on," said the doctor, because Leaver had stopped speaking to take
out and light a cigarette.

"Then according to all reports," went on Leaver, "this Skelton's altered
a lot in his ways and, when he meets his friends now, won't talk about
his job. He avoids them as much as he can, too, and never goes to the
local pub. Again, he's taken to living in a much better style of late,
as if he were getting a considerably higher wage. He's bought an
expensive sidecar outfit and both he and his wife have got leather
motoring coats. He looks bronzed and sunburnt, too, when he comes home,
as if he'd been getting plenty of fresh air. Also----"

"But all this is no evidence," interrupted the doctor testily, "to link
him up with working on Foulness Island."

"Yesterday afternoon I saw his wife go out with the two children," went
on Leaver, as if he had not heard the interruption, "and, knowing the
house to be empty, waited an opportunity until no one was passing in the
street, and then slipped round into the backyard. I got into the house
through the scullery window. I found it very nicely furnished, but all
with new stuff, and there was an expensive wireless in the parlor. Then
making a hurried search everywhere, I came upon a letter in the
tea-caddy from this Tom Skelton to his wife, dated only two days ago,
and I made an exact copy." He nodded triumphantly as he took out his
pocket-book, "Now you just listen."

He searched for a few moments and then extracting a small piece of
paper, proceeded to read out:--



"Tuesday evening, September 3rd. 1937.

Dear Martha--I am always glad to get your letters and know the kids are
well. I am all right, too. I don't write more often, because there is no
news to tell. As I expected I shall be coming home again on Friday, the
sixth, for the usual five days. I don't know the exact time, of course,
but expect it will be pretty late as usual. I shall try and bring some
more cockles, but I have learnt the tip is to soak them in salt water to
make them throw out that sand.--

Your loving husband,

Tom."



He leant back in his chair. "Now what could be more conclusive than
that. First--he gives no address and the omission is undoubtedly
intentional, for he is a methodical man, as is shown by his not only
mentioning the day on which he is writing, but also adding the date as
well, 'Tuesday evening, September 3rd.' Then, second--the Essex coast
right round from Leigh-on-Sea up to Clacton is noted for its cockles and
they are horribly sandy little beasts to eat. Yet a third thing--he
writes about the cockles 'throwing out the sand,' and that can only mean
that they will be still alive when he brings them to Manor Park, which,
of course, shows that they will have been gathered that same day." He
laughed. "Who ever heard of cockles coming from anywhere near
Birmingham."

Dr. Smith considered for a few moments and then nodded approvingly.

"Yes, I think you've scored a bullseye this time, for there is
undoubtedly mystery about that letter, and it fits in with exactly what
we should have expected he would write, if he were on secret work on
Foulness Island. Naturally, of course, he would have been forbidden to
put any address." He nodded again. "Yes, I believe as you do that we
shall find he's one of the men we have been looking for, and the thing
is now to determine what we must do next."

A short silence followed and then with a deep sigh, as if of regret, he
made an almost imperceptible shrug with his shoulders and asked Leaver
to open the window.

"We shall have to put up with the noise of the traffic," he said, "but
the room is stuffy and I feel rather faint." Then, when the young man
had complied with his request, he leant back in his chair and regarded
him very intently. Several times he opened his mouth as if he were about
to say something, but then each time he stopped himself and stared on.

Leaver was now leaning back too. He had again that half smile upon his
face, as he blew ring after ring of smoke into the air. All along his
manner towards the doctor had been rather casual, and it seemed as if,
having made his report, he did not intend to exert himself to continue
the conversation. The sounds of the traffic in the street below came up
noisily into the room.

At last the doctor spoke again, and he had now to raise his voice a
little to make himself heard.

"Now let me see," he said slowly. "Your pay is due next week, and if it
turns out you are right about this man, there will be the promised bonus
of 50, as well." He leant forward and looking hard at Leaver, began to
speak more quickly. "You are quite satisfied with what I am paying you,
are you not? There is no thought at the back of your mind that you
should be receiving more?"

"Certainly not," replied Leaver with no hesitation. "I have always
considered the pay quite good."

Dr. Smith spoke musingly. "I picked you out of the gutter, didn't I? You
had not many rags to your back when I found you and you were down and
out in every way! You couldn't get work anywhere and you were nearly
starving!"

Leaver nodded coldly. "Exactly!" he replied. "My record was too bad for
anyone to employ me." He added bitterly. "One little slip in this damned
country and you go under for ever." His lip curled. "You may just as
well become an habitual criminal at once. You are driven to it."

"And I give you 10 a week," continued the doctor, "and a life of
adventure with some danger and some risk!" He smiled whimsically. "Now
what more could a young man want? Surely you must regard me as your
benefactor."

"Most certainly I do," nodded the young man. "You are making life very
pleasant for me. I am having quite a good time."

The doctor slid his hand very slowly down on to the little automatic in
his pocket, and suddenly leaning forward, rapped out with a snarl--"Then
why are you spying upon me now, Mr. Leaver?" His whisper was like the
hiss of a snake. "Why are you selling me--you Judas?"

Leaver, with all his habitual air of self-control, at once looked the
very picture of consternation. His jaw dropped and his eyes opened very
wide. He was speechless in his astonishment.

"No, no," went on the doctor furiously, "don't you attempt to deny it.
You are having me watched."

Instantly then Leaver found his voice. "It's a lie," he exclaimed
angrily. "I'm not and I've never even spoken about you to a living soul.
I've never mentioned you to anyone since the first moment I came to know
you."

The doctor made a gesture of contemptuous disbelief, and, with long
forefinger upraised, slowly punctuated his next words. "Upon two
occasions last week you followed me when I went out for lunch, and on
Thursday and Friday afternoons there was a man, disguised as a railway
porter, waiting outside this building to trail me as I went home. All
these attempts were, of course, associated together and part of one
plan." He shook his fist menacingly in Leaver's face. "You are in
someone else's pay, you wretch. You are trying to sell me, I say."

Leaver had now in part recovered his composure. "No, I am not, Dr.
Smith," he said firmly, but at the same looking very shame-faced.
"Nothing of the kind is going on, although I realise now that I have
been very stupid." A smile curved to his lips. "Certainly, I did follow
you, and I confess I was that porter myself"--he made a grimace--"but as
I made no discoveries, no harm has been done and all your secrets are
safe."

The doctor appeared incredulous. "You were that porter!" he exclaimed.
He gritted his teeth together. "Then you admit you are double-crossing
me?"

"No, I don't," returned Leaver instantly. "There has been no double
dealing at all and I tell you I deny I have spoken about you to anyone.
I have just been too curious about you and that is all. As you are my
employer I ought, of course, to have minded my own business." He
reddened uncomfortably. "I realise that my attempt to trail you was a
dishonorable thing to do."

The doctor's face was grim as death. His grip upon the little automatic
tightened and his thumb felt gently along towards the safety catch. Then
he half drew the pistol from his pocket. "Have you made any such
attempts before?" he asked coldly.

"No," was the curt reply, "and you can rest easy I shall make none
again." He nodded his head jerkily. "I apologise to you."

Dr. Smith looked icily disdainful. "And your only explanation is that
you were curious!" he sneered. "Am I really expected to believe that?"

"Yes, you are," was the cool rejoinder, "for it's the truth and in the
circumstances only what you could reasonably expect." He quickened his
words and spoke with some anger. "Here have I, for nearly a year now,
been doing dirty jobs for you, some of which, if found out, would
certainly have landed me into penal servitude. Damned dirty
jobs--playing the traitor, spying for the enemies of Britain and selling
her"--he laughed bitterly--"I don't even know to whom."

He slapped his hand upon the desk. "Yes, that's where the thing
hurts--helping some damned country, perhaps, that all my life I've been
brought up to hate. And there you sit, every time I come for my
instructions, like an old mummy in some museum, with your stained hands,
your wig and your false beard." He scoffed contemptuously in his turn.
"I know for certain that you're not the Dr. Smith of Moon Buildings down
in the medical directory, for your ears are not those of a man as old as
he must be." He calmed down all at once and sat back in his chair. "Good
heavens, man, if I weren't curious I should be a blithering fool, and by
no means the type of individual to have found out all I have for you."
His jaws closed with a snap. "And that's that, Dr. Smith."

The doctor was still fingering the safety catch of his little automatic,
but his face was quite expressionless as he said slowly:--"Give me in
detail your exact procedure"--he hesitated a moment--"last Friday
afternoon, in detail, please."

Leaver looked in no wise abashed, indeed now, he seemed to be deriving
some amusement from the doctor's questions.

"I came into the building through the Fore street entrance," he began,
"at about a quarter to four and used the staircase, as I always do. I
had to saunter about for several minutes until there was no one in the
passage, and then I put my ear to your door to make certain you were
there. I heard a woman talking and had just time to bolt away before you
showed her out. I heard her say 'Good-bye, Doctor.' Then I would have
liked to wait in the passage to make sure which way you went out, but
didn't dare to do so because it happened the lift-man had seen me three
times, and I thought that the third time he was eyeing me very
suspiciously. So I went down and waited outside on Finsbury Pavement
until six o'clock came, and then, not seeing you, I guessed I had made
another miss, and that you had gone out the other way."

A thought seemed suddenly to strike him, and he went on
triumphantly--"And that proves I was acting all upon my own, for if I'd
been working for anybody else there'd, of course, have been a watch set
at both entrances to catch you."

"Did you come up and listen at my door again," asked the doctor, "to
make sure I had actually gone?"

"No. That lift-man had scared me, and, besides, I had got sick of the
whole business. I was tired and thirsty."

"And where did you go then?" was the next question.

"To the Talbot Hotel to have a drink. I needed one badly."

"And what did you do after that?" persisted the doctor.

"Went to a restaurant in Great Portland street to get a feed, then on to
the Juno to see 'The Jest of Life,' and finally to Beak street, to my
lodgings. I was home by eleven o'clock."

"Eight minutes past," corrected the doctor dryly, "and it was just
striking the half hour when you put out your light."

With a sigh that seemed one of great relief he drew out the hand in his
pocket, and with a quick, decisive movement, laid the little automatic
upon the desk before him. "Pull down the window, please, Mr. Leaver," he
went on with a grim smile. "The stuffiness of the room no longer upsets
me." His smile became more pleasant. "The atmosphere has cleared, and
the noise of the traffic is no longer needed to deaden any sounds in
here."

With a frown the young man did as he was requested, and then resumed his
seat, with his heart, however, beating quickly as he eyed the pistol now
in full view before him.

"So that was intended for me," he scowled with a slight catch in his
breath. "You were going to murder me, were you?"

The doctor held up his hand in protest. "An unpleasant word," he
replied, "that should never be used among friends"--he smiled
genially--"for I see, after all, we are going to be friends." He nodded
in the direction of the pistol. "Yes, that was intended for you, and if
you had not been truthful in every particular just now"--his voice
hardened--"you would have gone out from here in a packing case
to-morrow, for I was quite aware of everything you had been doing, and
my questions were only put to try you out." He leant over the desk. "Do
you know, young man, you have had a very narrow escape, or, indeed,
several narrow escapes, for I have been having you under observation
during every hour of the twenty four for longer than a week, and if last
Friday, after your fruitless waiting for me here, you had gone into a
telephone box, or had only happened to post a letter that night"--his
voice was very low--"quite apart from anything that has been happening
this morning, you would not be alive now."

Leavers face was damp and white. "And you talk about us being friends!"
he ejaculated jerkily, "after telling me that!"

"Why not?" asked the doctor with great pleasantness. "We understand one
another now, don't we?" He shook his head. "I never quite thought you
were going to betray me, and all along put your actions down to just
curiosity, as you have explained." He shook his finger warningly. "But
no more of it, Mr. Leaver, please, for I shan't overlook it a second
time."

Leaver eyed him sullenly. "Who are we working for?" he asked sharply.
"Which country is it?"

The doctor looked angry. "Mind your own business," he began, "and
don't----" but then suddenly he stopped speaking. He drummed with his
fingers upon the desk, he bit his lip, and he stared thoughtfully out of
the window. Then at last he turned again to the young man and smiled.

"Yes," he said, "you have a right to know, for you are not of the
ordinary run of people we employ." His whispering voice was lower than
ever. "The Soviet, my friend. We are working for Russia."

"Russia!" ejaculated Leaver. "Why, we're quite friendly with her!"

"Of course we are," laughed the doctor, "and our work is in consequence
only a matter of routine." He spoke impressively. "You don't appear to
understand things, Mr. Leaver, and realise that every Power in times of
peace, far more than in times of war, has its secret agents in every
other country. It is routine, I tell you, for they all want to know what
one another are doing." He spread out his hands. "Why, what Britain
spends on her secret service is publicly given out every year in the
Estimates, and this year I saw they are allowing for nearly half a
million pounds."

"You are not a Russian!" said Leaver frowning.

The doctor bowed and smiled. "I beg your pardon, my friend. I was born
in Moscow but was educated over here. I speak English faultlessly. As a
matter of fact, I am a Master of Arts of Oxford University." He went on
impressively. "The position is this. As you say, Russia is at present
friendly with England, and at the same time she is friendly with other
countries." He shook his head. "But that does not say she will always be
friendly, does it? No, of course not! And so, as an insurance for the
future, she has to keep herself in touch with all that is going on
everywhere. That is why such individuals as I have these enquiries made,
and why, again, I employ such men as you. Now do you understand?" He
regarded Leaver intently. "Does this explanation satisfy you?"

Leaver hesitated a moment, and then nodded. "All right," he said. "I'll
believe you."

"Of course you will," laughed the doctor, "for its the truth." He spoke
earnestly. "I should be very sorry indeed to fall out with you, for you
are intelligent, well educated, and have plenty of courage. You are just
the very kind of man wanted for this particular work."

"Fall out!" exclaimed Leaver, looking very reproachful. "That's putting
it mild, isn't it? You were going to shoot me!"

The doctor's voice was very stern. "Listen, Mr. Leaver," he said, "our
investigations in this country are just as criminal acts now, as they
would be if an actual state of war existed. The only difference is that
the punishments for discovery are not so severe." He spoke with some
irritation. "If then you were successful in giving me away, not only I,
but many others as well would undoubtedly be sent into penal servitude.
So naturally we will go to any lengths to safeguard ourselves and the
life of anyone who would betray us becomes a mere bagatelle. You
understand that?"

"Yes," replied Leaver dryly, "and I am in with you up to the neck, I
see."

The doctor nodded. "And you have been so for a long time now." His eyes
narrowed. "Don't you forget, my friend, you've not been altogether too
squeamish yourself, and when you got those fuses for me from Woolwich
Arsenal last May--remember--you put out that sentry with your bar of
lead and we've never learnt to what extent you injured him." He nodded
again. "So if you're caught it may not be just a question of
imprisonment for you, as you mentioned just now, for you may indeed have
all along been wanted upon the capital charge. Also, there's that little
affair when you pushed the watchman over into the dock at Chatham." He
rubbed his hands together and chuckled maliciously. "You don't know that
he wasn't drowned?"

"All right! All right!" exclaimed Leaver quickly. "You needn't bring
those things up. I'll carry on as you want to."

The doctor was at once all smiles again. "Of course you will, for you're
a sensible fellow." He pulled his chair up to the desk. "And now after
this little digression let's get back to business again." He considered.
"Well, you must find some excuse to get speech with this Tom Skelton, of
Raymond street, Manor Park--oh, yes, I know the exact address, for you
were followed to the house--early on Saturday morning, and then come
straight back here and tell me exactly what kind of a man he is. We must
be very sure he is the type of individual we dare approach, for we can't
risk his going straight off and giving us away to the authorities. Now
is there anything more we need discuss?"

Leaver hesitated and then spoke with studied carelessness. "I think you
might give me a few pounds on account," he said. "I've run a bit short."

"You shall have 10," said the doctor, and producing a wallet from his
pocket he took out a thick wad of notes and began counting some off.

Instantly then, Leaver sprang to his feet and in a lightning movement
reached over and snatched up the automatic on the desk. Then, pointing
it straight at the doctor, he stepped backwards to the window, and with
his disengaged hand finding the catch, he pulled it up sharply and the
noise of the traffic at once came up into the room.

"Now, Dr. Smith," he exclaimed triumphantly, "what about it? The tables
are turned, my friend."

The doctor's mouth gaped in discomforted surprise, and he half rose from
his chair, but then quickly recovering himself, he sank down again and
chuckled as if he were in the enjoyment of some good joke.

"Excellent!" he exclaimed in great good humor, and appearing in no wise
put out. "I did well to form the high opinion of you that I have, for I
see you are quick to seize an opportunity and are not wanting in
resource." He eyed him tauntingly. "But the thing is--would you dare to
shoot? Have you courage enough?" He scattered the wad of notes over the
desk. "Look, there is more than 100 here, and"--he pointed to the
adjoining room--"you'll find a good 1,000 in the safe." He nodded
confidingly. "That silencer, too, makes very little noise."

Leaver spoke with perfect self-possession. "I would not shoot you for
money, Dr. Smith," he said, "and so you're quite safe there." His eyes
gleamed. "But what about taking off those glasses and that wig and
beard. I want to see what manner of man my esteemed employer is."

Dr. Smith turned his eyes down and began gathering up the notes. "All
right," he said testily. "I suppose I'll have to do it," and then he
added with a scowl, "but it'll cost you 5 a week, for I shall dock your
pay that much."

For perhaps ten seconds Leaver still stood covering him, and then,
turning sharply, he pulled down the window and stepped over to the desk.

"You can keep your wig on, Doctor," he said quietly. "It was only a
joke," and he put the pistol back upon the desk.

"Ho! ho!" exclaimed Dr. Smith, as if rather surprised, but without
looking round, and continuing to gather up the notes, "then you are
confident you are safe with me after this impudent display of
insubordination?"

"Yes, quite," replied Leaver. "I don't think you are spiteful, for you
take much too broad a view of life."

The doctor paused now and glanced up at the young man with a cunning
look upon his face.

"But I noticed you shut that window before returning this pistol. You
were bent upon minimising your risks!"

Leaver colored ever so little. "You might perhaps have been annoyed for
the moment, and I thought----"

"You did quite right," nodded the doctor with a smile, "and I think the
more of you for your precaution. No. I'm not spiteful, and in proof of
it--here I'll make you a present of the pistol. It may come in useful
some day, and if it does you'll find the silencer is a wonderful
invention. The shot can hardly be heard."

Leaver colored still more. "It's very nice of you, Doctor, I am sure.
I'll take it with great pleasure. You are a good sport, whoever you may
be."

They talked on for a few minutes, and then parted on the most amiable
terms.

"Yes," remarked the doctor musingly when he was once more alone, "it is
always better to work with a man of his class, for whatever he does, as
an old Charterhouse boy and a gentleman, he'll always retain something
of his sense of honor." He nodded. "Yes, I did well to let him go."




CHAPTER III.--THE SPY


About eleven o'clock, upon the following Sunday morning Tom Skelton was
sitting upon one of the seats on the Esplanade at Southend seemingly at
peace with all the world and very pleased with himself.

He was munching assiduously at 'two pennoth' of shrimps, which he from
time to time abstracted from a small brown-paper bag, and so tender,
succulent and tasty were these little denizens of the vasty deep that he
was devouring them, heads, tails, scales and all, with no qualms
whatsoever that they would upset his digestion.

Some fifty yards away, upon the sands below, his wife and two little
ones were building a huge sand-castle, and he was lazily regarding them
with the proud feelings of the admiring husband and father. Every now
and then, however, he shot a glance up at the big clock upon the pier to
determine how much longer it would be before he could obtain a refresher
from the nearest public house.

He was a contented, happy-looking man, rather short and stout, with a
round, clean-shaven face, and big, innocent blue eyes. He had chubby
cheeks and a small mouth, and he was wearing a suit of good, but
obviously ready-made, clothes.

For a long time he had the seat all to himself, but then just when he
had munched the last shrimp, and made a ball of the small brown-paper
bag and thrown it at a sparrow, a very well-dressed man, with a monocle
and smart bowler hat, strolled up, and seated himself at the other end.

Tom took a good squint at the newcomer. "A nob!" was his muttered
comment, "a real toff! I must get a pair of spats like those myself. Why
shouldn't I? I've got the cash."

The gentleman took out a cigar from an elaborate case, and, clipping the
end with an expensive-looking cutter, moistened it delicately with his
lips and then proceeded to abstract a little silver match-box from his
waistcoat pocket.

"Whew!" whispered Tom, "wax vestas! I'll get a box of them, too. Yes,
he's a real nob, he is!"

But the stranger had suddenly frowned, for the match-box was empty. For
the moment he looked most annoyed, and then apparently noticing Tom for
the first time, he turned with a courtly gesture, and smilingly
suggested the gift of a match.

Tom complied with alacrity, and the stranger, having lighted his cigar,
returned the matches with a bow and grateful thanks. Then suddenly, it
seemed as if he were in the way of being very puzzled about something,
and, taking the cigar from his mouth, he eyed Tom very curiously.

"Good gracious!" he exclaimed after a moment, "but it's Mr. Skelton, I
am sure; Mr. Thomas Skelton, of Manor Park. Yes, yes, it must be, for I
never forget a face." He chuckled in quiet amusement. "No, of course,
you don't know me, but I remember seeing you"--he dropped his voice and
looked round to make certain that no one was near--"on Foulness Island."
His voice became now the very merest of whispers. "You are one of the
glassblowers there."

Tom looked the very picture of embarrassment. He screwed up his eyes, he
opened and shut his mouth, and he swallowed hard. Then he turned his
face away and, without saying a word, gazed stolidly out to sea.

"Oh! it's quite all right," laughed the stranger. "I'm a Government
official myself." He dropped his voice again. "My name is Worley and my
work lies in Whitehall. As a matter of fact, it is I who sign the
wages-sheet for you chaps on Foulness, every week." He spoke very
confidingly. "It happens in this way that I come so particularly to
remember you. I was on the island"--he hesitated--"let me see. Yes, it
was just after you first went there, about last March, I think, and
chancing to catch sight of you I was struck at once with your likeness
to a cousin of mine, Commander Worley, in the navy. 'Who's that man?' I
asked at once, and then they told me, and so ever since when I see your
name upon the pay-sheet I think of you." He rattled off: "Mr. Thomas
Skelton, 17 Raymond street, Manor Park. Age 34, has a wife and two
children, and for seven years was head-blower at Wilkinson's in
Spitalsfields." He took a long puff at his cigar. "My conscience, but
what a coincidence meeting you here when you only came home for your
leave on Friday!"

Tom still looked rather embarrassed. "But we're not allowed to talk
about anything, sir," he said. "We are sworn to the utmost secrecy."

"And quite right, too," agreed Mr. Worley. He nodded. "As a matter of
fact again, it was I who drew up that regulation." He smiled all over
his face. "Well, did you bring back any of those cockles this time?
They're devilish sandy little things, aren't they?"

Tom smiled back now. "Yes, they are, sir," he replied, "but the tip is
to soak them in warm, salted water and then they throw out all the sand
themselves."

"Ah!" exclaimed Mr. Worley delightedly. "I must remember that. One of
the heads there often brings me a little parcel of them and, although I
have never dared to tell him so, we've never been able to eat them." He
nodded. "But next time I'll do as you suggest."

And then, talking about the weather and shrimps and Southend, and what
highly responsible work his was at Whitehall, and with what important
Ministers of the Crown he was daily brought in contact, this
courtly-mannered Mr. Worley quickly wormed himself into the complete
confidence of Tom, and then gradually and very tactfully, he brought
back the conversation again to Foulness Island.

"Of course," he said, shaking his head, "I know nothing as to how things
are exactly done on the island, for as I've told you, I've only been
once there and my duties, too, at Whitehall, lie all on the clerical
side, still"--and he looked rather worried--"my chiefs often talk to me
about what's going on and only this very week Lord Montgomery mentioned
to me how afraid they are that one day some foreign power will get hold
of a piece of this wonderful glass and then"--he turned out his
hands--"the whole secret of its composition will become known."

"Oh, but I'm sure too many precautions are taken," said Tom, now quite
at his ease. "They needn't worry there."

But Mr. Worley still looked worried. "Well, do you think now, Mr.
Skelton," he asked earnestly, "that if one of the workmen on Foulness
was offered a big bribe, say, of something like 10,000, that he would
betray his country and smuggle out a sample?"

"He couldn't do it, sir," said Tom instantly. "He'd have no earthly
chance." He laughed. "Why, we are all stripped mother-naked every
evening before we leave the furnace chambers or any of the machine
shops, and we couldn't get away with a piece as big as a pea if we
wanted to!"

"But you might swallow a lump," urged Mr. Worley, "and make yourself
sick afterwards and then hide the piece somewhere until you were coming
home on leave."

Tom laughed again. "Nothing doing, sir," he said, shaking his head, "for
the day before we are going on leave we are taken into the hospital and
kept there 'under observation' as they call it, for thirty-six hours."
He made a wry face, suggesting evil-tasting potions. "So there's no
chance of carrying a piece off the island in that way."

Mr. Worley seemed impressed. "Then the precautions taken are most
thorough," he remarked, raising his eyebrows.

"Couldn't have imagined there could be anything like them," nodded Tom.
He looked aggrieved. "Why, your blooming soul's not your own when you're
on that island, and they treat everyone of us as if we were spies." He
went on, now throwing all his caution to the winds in the pleasure of
enlightening the important gentleman from Whitehall. "You see, sir, the
island itself is like a prison to anyone working on it, and that big
compound that surrounds all the buildings where the glass is being made
and used is like another prison, too--a prison within a prison--for
we're never allowed to set foot outside it for twenty-eight days on
end."

"Good gracious!" exclaimed Mr. Worley, "then don't you get any exercise
or fresh air?"

"Oh, yes, the compound's a huge place and it must be more than a mile
round, outside the fence. We get plenty of exercise and games, but we
never see the sea, although it's not a quarter of a mile away, for the
seawall hides it from us."

"And if any strangers managed to get on the island, say on a dark
night," asked Mr. Worley, "could they get over into this compound, do
you think?"

"They might," replied Tom, rather dubiously, "but the fence is high, and
there are plenty of spikes at the top. Besides, there are lights every
hundred yards and always armed sentries stationed about." He shook his
head. "No, I don't think they could manage it, unless"--he hesitated a
moment and considered--"unless they knew the place like one of us does
and there was a good fog on." He nodded. "Yes, a fog would be their only
chance. That'd help them certainly."

"And I should say you must get plenty of fog and mist there," suggested
Mr. Worley, "with all those creeks and swamps on the land side of the
island."

"Oh, we do," agreed Tom at once, "and they say it's awful in the winter,
with the fogs hanging round for days and days at a time." He grinned.
"But then if they did get into the compound they'd have a darned hard
nut to crack to get into any of the shops. The only way to do it would
be to get through the galvanized iron somewhere." He nodded confidently.
"No, sir, I think we're pretty safe, for no stranger gets an opportunity
to have a look over the place and make his preparations beforehand. The
barbed-wire entanglements all round the island make it impossible for
anyone to land. We've heard that if a bit of wire is cut anywhere there
an alarm rings in the guard-room at once."

Mr. Worley looked very stern. "Well, there's one thing," he said
sharply, "no one will ever get to know the special ingredients that we
put in the mixture to give the glass its hardness and invisible
properties."

"No, that they won't," agreed Tom emphatically, "for no one but the
doctor and his assistant ever go into the mixing room, and three doors
have to be unlocked every time for them to go there. Those two gentlemen
are the only two on the island who know the secret."

Mr. Worley pursed up his lips. "Ah! but we have to be so careful, you
see." He eyed Tom grimly. "But do you men never speculate as to exactly
what is put in the sand?"

Tom laughed. "Of course we do," he replied. He spoke proudly. "We are
all experts and picked men, the very best in England, and we used to
think we knew everything about glass until we went on this job." He
shrugged his shoulders. "Now we own up we're properly beat. It's a
darned mystery to us."

A smile curved to Mr. Worley's lips and he took out his monocle and
polished it vigorously with his handkerchief. "And they don't even let
you know the name of the doctor, eh?" he asked looking rather amused.
"You're not even allowed to learn who this doctor is?"

Tom shook his head. "No, he's just 'the Doctor' to everyone," he
replied, "and his assistant they call 'the Chief.' But, as it happens, I
know his Christian name," he added smilingly, "for one night when he was
passing through the compound--they didn't know I was anywhere near--I
heard the chief call him 'Ben.'"

"Of course, he's not a doctor who attends you in illness," informed Mr.
Worley. "He's not that kind at all."

"Oh, I know that, sir, for if anyone gets hurt or burns himself they
fetch one of the other doctors from the hospital. This one is a
chemist-doctor, I've been told."

"And a most distinguished one," nodded Mr. Worley, "a great scientific
man. I've lunched with him several times." He smiled. "But now would you
say he looks what he is, Mr. Skelton? Would you call him a handsome and
distinguished man?"

At once Tom's chubby face became all puckered up in fun. "With that
carroty hair, sir," he chuckled, "tall and thin as a lamp-post, and
long face with a hooked nose!" His eyes twinkled. "No, if I was a young
lady I certainly shouldn't fall in love with him." He nodded. "But
someone evidently did think him good-looking, because he's married, and
they've just got a baby. He happened to be going home in the same plane
that brought me on Friday night and I heard him talking about it to
Colonel Maitland and say how curious he was to see the kid."

Mr. Worley laughed. "And where did they drop you this time, Mr. Skelton?
Up Glasgow way?"

Tom laughed too. "No, not quite as bad as that, sir, but the car that
brought us back to London was waiting for us in a whopping big aerodrome
this time. They never tell us where they land us and we're not allowed
to ask, but on Friday it was somewhere some miles beyond Newmarket, for
I recognised that town as one we passed through. I think we went to that
particular 'drome for the doctor's sake, because I heard him say as he
stepped out of the plane that he would be home in less than half an
hour. The car that took him was in front of us until we had passed
Newmarket and then I lost sight of it."

For half an hour and longer the two talked on, and then at the end of
that time there was very little that the engaging Mr. Worley did not
know of the routine of the daily lives of those who worked on Foulness
Island. But it did not seem to Tom that Mr. Worley was in any way
prying, or had indeed, asked very many questions, the latter having from
time to time just delicately diverted the conversation into those
channels that were interesting him most, and had obtained all the
information he wanted that way.

They parted at length the best of friends, with the whispered injunction
however, from Mr. Worley that on no account must Tom mention to a soul
that they had met.

"Of course, as you say, we really oughtn't to have talked as we have
been doing," he smiled as they shook hands, "and if it got known we
should both get a sharp rap on the knuckles. You understand?" And when
Tom winked his eye, Mr. Worley smiled back with manifest amusement, as
if they mutually were in possession of some very good joke.

       *       *       *       *       *

The following week, Scampy Rook, the proprietor of the small and wheezy
motor launch, the 'Mary Belle,' that had just managed to pass the
inspector, and was licensed to carry twelve passengers, was of opinion
to the utmost of his convictions, that he had at last well and truly
struck oil.

Scampy or Captain Rook as he preferred people to call him, was a big,
burly man with a fierce, truculent-looking face and eyes set very close
together. He sported a torpedo-shaped beard to suggest to his patrons
that his appearance smacked of the Royal Navy, and for the same reason
he wore a peaked cap with broad gold braid, and a closely buttoned
reefer coat with big brass buttons.

Trade had been very bad, for the Southend summer season was waning fast
and with all his hoarse importuning, "Here you are! One bob only! Cruise
on the ocean deep!" passengers had been few, and he had often had to
push off with only half of his full compliment.

But then all suddenly, from the big Palace Hotel had appeared this
eccentric stranger, who wanted to be taken somewhere to fish in peace
and quiet and was prepared to pay 4 a day for the exclusive use of the
launch, with the services of Scampy included. Moreover, the hiring was
not to be for one day only, but for several days, and indeed it might go
on for a week if the weather continued fine. The hours of the fishing
were to be from ten to five, the stranger agreeing to provide a daily
luncheon hamper for them both.

Scampy had jumped at the offer and upon the morning following the
afternoon when the bargain had been struck, exactly as the pier clock
was striking the hour or ten, the stranger appeared on the pier steps,
heavily laden with a large rug, a cushion, the usual fishing
paraphanalia, and, to Scampy's joyful anticipation, quite a big luncheon
basket from which protruded the necks of two bottles of beer.

"Now take me anywhere you like?" said the stranger affably, as he made
himself comfortable and tucked the rug round his knees. "My name is
Danker and I don't mind where we go as long as there's no crowd. Find a
nice spot and anchor there, and if the fish are not biting, I'll read or
go to sleep. My nerves are bad and it's sea air and quiet I want, much
more than fish."

So Scampy, with an eye to the petrol consumption, just crossed over to
the Nore Sand Buoy and, throwing out the anchor, prepared to earn the
easiest money he had done for many a long day.

The fish were certainly not biting well, but Mr. Danker made no
complaints, and, soon tiring, settled himself down in the stern and took
a little nap. He was a stout man and was well insured against catching
any chill by a big and heavy ulster that reached almost to his feet, and
a big Trilby hat, pulled down low upon his forehead. His iron grey hair
was very long at the back, and he was well bearded and moustached. His
complexion was dark and he wore tinted glasses.

"A blooming foreigner," thought Scampy, eyeing him intently, "although
you couldn't tell from the way he speaks. Looks like a musician to me.
Now, I'd bet he plays the fiddle." He nodded curtly to himself. "But
he'll have to cash up every night, whoever he is. There's going to be no
tick or cheques over this job. It's going to be hard money, down."

Mr. Danker woke up presently and started to converse in a most friendly
way about all sorts of things. He was very interested as to what
channels the great liners took when they were steaming out to sea, of
what significance were all the warning buoys and which sands were quite
uncovered when the tide was low. He called Scampy 'Captain' many times,
and foreigner or no foreigner, Scampy's estimation of him went soaring
high, when the contents of the luncheon basket were revealed at one
o'clock. Pork pies, beautifully cut sandwiches, bread and cheese, and
not only the aforementioned bottles of beer, but two generous tots of
good, strong rum to make everything sit easy on the stomach.

"Gosh! What a find!" ejaculated Scampy as exactly at two minutes past
five he stowed away four one-pound notes in his back trouser pocket,
after he had set his passenger upon the pier. "And his grub was real
good, too." His big, cunning face took on an anxious expression. "I hope
the blazes he turns up to-morrow!"

But Scampy need have had no fears, for Mr. Danker appeared again the
next morning, with the same luggage and the same luncheon basket,
heavily laden with good things.

"And where would you like to go this morning, sir?" asked Scampy,
placing the basket in a secure place so that by no chance should any of
its precious contents come to any harm.

"Anywhere you suggest, Captain," replied Mr. Danker cheerily, and then
in an afterthought he added: "Oh, let's go round beyond Shoeburyness,"
and so by half-past eleven they dropped anchor just by the south-east
Maplin buoy.

"And where are we now, Captain?" asked Mr Danker, who certainly seemed
in a much less sleepy mood that morning.

"Just off the Maplin sands, sir," replied Scampy, "and if it were low
water--except for the first couple of hundred yards--we'd be able to go
dry shod, right up to dry land."

"Goodness gracious. All this long way!" exclaimed Mr. Danker. "Why,
surely the shore's many miles from where we are now."

"Four and a bit," replied Scampy, "and then you'd be on Foulness
Island."

"Oh, Foulness Island!" said Mr. Danker, his eyes now opening very wide.
"Then this is the secret island where all sorts of mysterious things are
going on?"

"That's it, sir," nodded Scampy. "They are making wonderful bombs there,
and, up to a couple of weeks back, it was boom--boom--boom--all day
long. But I suppose they've got the things perfect now," he grinned,
"and are keeping them for old Hitler or Mussolini."

"Foulness island!" said Mr. Danker very thoughtfully, "and only last
night we were all talking about it in the lounge of my hotel after
dinner. A very cocksure bookmaker from Birmingham, in a big way and very
wealthy, I am told, was declaiming to us that it was such forbidden
ground and so well guarded that he was prepared to bet any money no one
could land on it at any time, day or night, under any pretence."

"Take it on, sir," laughed Scampy, "and I'll have a shot at it, if you
make it worth my while."

"But are there many people living there?" asked Mr. Danker curiously.

Scampy spat with great emphasis into the sea. "No one knows who's on it,
sir," he replied. "There may be fifty; there may be a couple of
thousand"--he nodded darkly--"and yet never a soul is seen to approach
or leave it. No boat ever goes near it, no cart or motor car ever goes
over the sands at low water and it might be quite uninhabited, if we
didn't know different."

"And how do you know different?" asked Mr. Danker with a smile.

Scampy spat again into the sea. "At night it's a blaze of light," he
replied. "Big arc lights every couple of hundred yards all round it and
then in the dark we hear the hum of the aeroplanes coming and going at
all hours of the night. All the fetching and carrying is done with
planes."

"And where do these planes go?" asked Mr. Danker very surprised.

Scampy shrugged his shoulders. "No one knows and they take jolly good
care no one shall know either. They're tremendously big and fast and
they fly very high. They go away in all directions and sometimes they
disappear right out to sea as if they were going to Belgium or France."
He nodded. "But no one gets a good view of them, close up."

"Dear me! Dear me!" exclaimed Mr. Danker, evidently interested. He
pointed in the direction of the island. "But what is there now to
prevent you and me going right up to it and landing."

Scampy looked scornful. "Barbed wire entanglements, sir, fifty yards
deep. There's only one narrow gateway on to the island, and they say
that's guarded with a regiment of soldiers with machine guns."

"You astonish me!" said Mr. Danker. "And just because they're making
bombs!"

"Very special bombs, sir," nodded Scampy again, "and no one will know
anything about them until the next war comes."

"And you mayn't go anywhere near?"

"No; and if by accident any fishing boats get too close," said Scampy,
"they fire right at them as a warning to sheer off, and if it's dark a
huge searchlight instantly picks them out. They've always got someone on
the look-out."

"But surely," protested Mr. Danker, "they don't sink those innocent
fishing boats!"

Scampy laughed. "Oh, no, sir, they don't shoot to sink them, but they
just pop bullets all round. One of my friends, a Mr. Snookes, swears
that they fired through his sail one night and he's got the holes to
show for it." His laugh changed to a scowl. "They're a high and mighty
lot, these military, and think they can do just as they like. I've no
time for them."

"Then someone ought to write to the newspapers about it and complain,"
smiled Mr. Danker. "That'd make them sit up."

"I've got a better idea than that," winned Scampy, "and with all their
barbed-wire entanglements, I've often thought of making them look
fools." He laughed scoffingly. "I could do it, if I wanted to."

"How?" asked Mr. Danker, appearing very amused.

"I'd wait for a foggy night," replied Scampy, lowering his voice darkly,
"and then I'd come here in a rowing boat, with muffled oars. I'd bring
some strips of stair carpet with me and a long clothes prop. I'd push
one strip over the barbed wire as far as it would go, and then I'd climb
on it to the end and push another strip before me." He looked very
cunning. "See the idea, sir? With four or five lengths of carpet it
would be as simple as A.B.C." He chuckled hoarsely. "I'd get on to the
island and then I'd stick up a red flag in the ground somewhere, and--my
oath!--wouldn't they look fools when the fog cleared?"

"It'd have to be a pretty thick fog, wouldn't it?" queried Mr. Danker,
looking rather doubtful.

"Gosh!" exclaimed Scampy, "there'd be no trouble then. We get days and
days of fog in the winter and it's so thick you can't see your hand." He
spoke with great conviction. "Yes, fog's their deadly enemy, sir, and
they can't fight against it."

Mr. Danker was very quiet that afternoon, and addressed few words to
Scampy. He let the latter do all the fishing and sat huddled up in the
stern either dozing or else staring out from half-closed eyes at the
mysterious island he had just been hearing so much about.

Upon their return to Southend and when they were within a few hundred
yards of the landing steps, he handed Scampy four Treasury notes, with
the intimation that he should want the launch again upon the morrow.
Then he remarked abruptly, "I take you to be a man of courage, Captain
Rook." He spoke very sharply. "Is that so?"

For a moment Scampy looked surprised at the question, and then he nodded
with a grim smile. "Afraid of nothing, sir, and been like that all my
life. I was in the police once, and got discharged for striking a
superior officer. Then I was runner for a street bookie for several
years, and risked getting pinched a thousand times. Then I've worked a
bit on the racing cars at Brooklands, and was in danger of my blooming
life every blessed day." His smile became more pleasant. "Yes, I've
always been a bit of a tough."

"Good!" commented Mr. Danker. "Then I may have something to say to you
to-morrow. Perhaps I'll put you to the test."




CHAPTER IV.--THE SECRETS OF FOULNESS


The third day or the hiring of the Mary Belle by the eccentric Mr.
Danker had proceeded very much upon the same lines as the other two had
done until the luncheon basket had been emptied. They had anchored again
off the south-east Maplin buoy. Mr. Danker had fished a little, dozed a
little, and carried on a desultory conversation with his companion.
Notwithstanding that the weather was quite warm for the time of year, he
had discarded none of his garments, and the long ulster still enveloped
his stout figure.

Scampy, hoping from the parting remark of his generous patron the
previous evening, that more emoluments yet might be upon their way, was
very disappointed that no reference was again made to the matter of his
courage. However, another very satisfactory lunch having been disposed
of, and the last drop of rum being well and truly drained, his hopes
went soaring high when Mr. Danker said suddenly--

"Well, Captain, if you really are the man of courage that you told me
you were, I have a nice little job for you that may mean quite a bit of
money." He smiled. "Now, you still say you are a plucky fellow?"

"Go anywhere," grinned Scampy, "do anything"--his eyes narrowed, and he
nodded significantly--"if I'm well paid for it."

"Good!" exclaimed Mr. Danker, "then I want you to get on to Foulness
Island tonight."

Scampy started and then looked quickly up at the sky. "But there'll be
no fog with this weather," he said with a shake of his head. "More
likely a bit of a storm." He nodded. "You mean that carpet business, do
you?"

"No, no," replied Mr. Danker sharply. "Nothing so difficult as that! A
much simpler way!" He eyed Scampy as if he were trying to mesmerise him.
"This launch is going to break down off the Maplin light tonight, and
you'll drift on, or be blown straight on to the island. The tide'll be
just right."

"No! No!" exclaimed Scampy with a frown, "but that doesn't sound too
good. I don't like the----"

"One moment," interrupted Mr. Danker. "I want to know a few things about
you first. Now, are you a married man?"

"Yes; been married two years, and got a young wife and two kids."

"Well, do you make much out of this launch? Does it return you a good
livelihood?"

"By hell, no," swore Scampy instantly, and in great disgust. "This
damned engine simply drinks petrol, and there's always money going out
in repairs. If I'm carrying more than two passengers I have to employ an
extra hand, too, and his wages take away any profit there might be." He
shrugged his shoulders. "No. I just pay expenses in the summer, and in
the winter I run into debt. I'd chuck it any day if I could."

"Then why don't you?" asked Mr. Danker. "Why don't you try something
else?"

"I can't," replied Scampy. "It's capital I want, and I haven't got it."
He spoke disgustedly. "Why, this very week I'm missing the best of
chances and I'm quite helpless and can do nothing. A friend of mine has
one of the tightest little pubs in all the country and he's got to sell
it because of his health. It's in Battlebridge, not ten miles from here,
and he's giving me the first offer, if I can raise the cash." He laughed
scornfully. "It would be easier for me to raise the devil."

"What would it cost to go in?" asked Mr. Danker.

"300," replied Scampy, "and I'd get it all back in a year."

"All right, then," said Mr. Danker decisively. "You can take it
to-morrow. I'll lend you 300 and there'll be no question of any paying
back, if you just do as I want you to."

Scampy could hardly get his breath. "And you'll do this," he gasped,
"just for me getting on to Foulness?" He suddenly became suspicious. "Is
it spying you're after? Is it a hanging job if I get caught?"

Mr. Danker threw his head back and laughed merrily. "No, no, my friend,
it's nothing like that," he replied in great amusement. "It's just a bet
I've taken with that rich bookmaker and I want to win it, because he's
always so cocksure about everything. He's betted me 500 to 25 that I
can't prove to him that civilians have landed upon Foulness Island
without any difficulty. He's given me ten days to win the bet, but this
morning I found I must get back to London the day after to-morrow, and
so if I'm to win it I must win it straightaway, as I can't stop here any
longer." He began to laugh again. "Spying! Why, I'm the proprietor of a
great London newspaper. I own the 'Daily Telephone!'"

Scampy's heart was thumping hard. "And what exactly do you want me to
do?" he asked hoarsely.

Mr. Danker spoke impressively. "Now listen carefully," he replied. "I've
thought it all out." He broke off suddenly. "By the bye, is this launch
insured?"

"For 75," nodded Scampy. "That's all I could get on it"--he grinned
cunningly--"or anything might have happened."

"And it's all it's worth," commented Mr. Danker with emphasis. "That
engine is very crook and would never have lasted you another season.
I've been expecting every day that it would break down." He went
on--"Well, this is what I want you to do, and, as I say, the tide's just
right for it. Tonight at half-past seven you'll be at the end of the
pier, calling for passengers for a moonlight trip round the Maplin
light, then you'll go----"

"But supposing I don't get any passengers?" interrupted Scampy. "They
don't always swallow the bait, you know!"

Mr. Danker looked annoyed at the interruption. "But you'll make the fare
so low," he frowned, "that you'll be certain to get them. Take them for
a shilling, or even for less if they won't pay that. Make the offer look
tempting, and say the cruise will last a couple of hours."

Scampy eyed him narrowly. "You'll be coming, of course?" he asked.
"You'll be seeing me through with it?"

Mr. Danker shook his head. "No, no, I want my proper hours of sleep," he
replied instantly. "I'm too old for such adventures now." He spoke
quickly. "But there'll be no danger or difficulty, man. It'll be a very
simple little affair for you to do."

Scampy looked doubtful, but the thought of the 300 spurred him on. "And
what'll come next," he asked, "supposing I do get a boat load?"

"You'll go out as far as the Maplin Light and then, just turning for
home, you'll tell them the engine's not going properly and you'll start
fiddling about with it until you finally make it stop altogether. Then
you'll say the platinum point must be dirty and you'll go at it with a
file until there's no platinum left. Then you'll call out it's quite
hopeless, and you'll have to let the launch drift with the rising tide
right up to the island. Then----"

"But why don't I throw out my anchor?" growled Scampy in a tone that
showed he was not at all taken with the idea. "They will be asking me
that at once."

"What for?" asked Mr. Danker with some irritation. "What good would that
be? You couldn't remain there all night. Think of your passengers. The
exposure would be dreadful for them! No, no, you'll drift on until the
launch grounds. Then you all jump out and make for the shore as quick as
you can before the tide overtakes you. You must manage it so that you'll
be close in to the shore. Then you must wave your lantern frantically
and you'll lead the shouting as if you were very much afraid."

"But they'll fire on us," protested Scampy. "They won't let us come
near."

"Nonsense!" exclaimed Mr. Danker testily. "They'll see you're only
excursionists, and common humanity will compel them to give you all the
help they can." He shrugged his shoulders. "Why, if there's any wind
about, you may all be soaking wet by then, and there may be children in
your party, and girls in light clothes. They'll have to take you up on
to the island and get you dry clothes and hot things to drink. You'll
probably stay the night then, or they'll ring up for a plane to come and
fetch you from Southend."

"They wouldn't use any of the planes they've got there," grunted Scampy.
"That's a certainly, for they never let any one see them." He looked up
sharply. "But I say, Mister, I see a snag in this, for even if I bring
it all off as you say, what about that bookmaker friend of yours giving
the whole show away and telling everyone it was all a put-up job, done
for a bet." He whistled. "A nice thing it'd be for me, wouldn't it? Why
I should get two years' hard labor, at least."

"Oh! Captain, Captain," said Mr. Danker reproachfully, "how can you be
so simple?" He looked scornful. "Just as if I should take him or a
living soul into my confidence! Why, I should get punished as severely
as you, or probably more so, because I had paid you money to do it!" He
shook his head emphatically. "No, of course, my bookmaker friend will
know nothing about it, and it will be just a very wonderful coincidence
that all this happened to save me attempting any adventure on my own."
He bent forward confidingly. "Don't you see you are quite safe?"

But Scampy made no answer, and, turning his eyes away, stared
thoughtfully into vacancy.

"I don't see any difficulty at all," went on Mr. Danker persuasively.
"No one can possibly have any suspicion of you, for there'll be the
faulty magneto to show what's gone wrong."

Scampy spoke hesitatingly. "But what guarantee have I?" he began,
"that----"

"You'll get the money," interrupted Mr. Danker, with a laugh. "Oh, that
will be quite safe, for you'll have half of it straight away. Here, I'll
give it you now," and thrusting his hand into his vest pocket, he
produced a bulky wallet.

Scampy moistened his lips and swallowed hard as he watched him peel off
note after note from a thick wad, and then he hesitated no longer.

"All right, Governor," he said hoarsely. "I'm your man. I told you I was
a good plucked 'un." A thought seemed suddenly to strike him, and he
added. "But here, I say, when do I get the other half?"

"I'll come and give it to you," replied Mr. Danker--he hesitated--"or
else I'll post it you if you give me your address." He nodded. "You can
depend upon it, for I am a man of honor, and besides, I've told you who
I am."

They parted at the pier steps, and then when Scampy was lashing the Mary
Belle to her moorings, he noticed a small piece or paper close by where
Mr. Danker had been sitting. Picking it up curiously he saw it was it
was a Liverpool street station cloak-room ticket, dated the previous
week, and made out for a bag deposited there by a J. Reynolds.

"Hum!" he remarked, "that's funny!" He frowned thoughtfully. "Now, I
wonder which one of them is his real name?"

That evening at half-past seven the Mary Belle was being held close to
the pier steps with a large boat-hook, and Scampy was looking up and
shouting to a little crowd of people who were leaning over the rail
above--"Here you are! Great moonlight cruise round the famous Maplin
Light! Only a bob a head. Come on now, for there are only a few seats
unreserved."

It was a rather warm night for the end of September, and there was a
suggestion of thunder in the air, but the sea was not choppy, although
there was certainly a bit of a swell.

Scampy's assistant, an oily-looking young fellow in dirty overalls,
joined in with the exhortation. "Come on ladies and gents," he cried.
"We'll be just in time to see the great liners going out to sea. They'll
be passing in half an hour."

A hundred and more people, men, women and children, had got their heads
over the rail, eyeing the little launch with interest, but with
apparently no inclination to invest their shillings. A young fellow
about twenty, with a pretty girl upon his arm, started playing the Volga
Boatman Song upon a concertina, and, playing very nicely, the attention
of the crowd was diverted and fewer people leaned over the rail. A
toothless, but very happy looking old man applauded vigorously when the
tune was finished, and importuned the musician to go on.

Time was slipping away, it was 20 minutes to eight, and Scampy began to
get desperate.

"Here you are, then," he shouted hoarsely. "A tanner and a threp and you
make the cruise! Only ninepence for two hours on the ocean deep! Come on
now!"

The toothless old man leaned over the rail. "What! two hours for
ninepence!" he shouted down to Scampy. "All right, then, I'll come." He
turned to the young man with the concertina. "You play very nicely, sir,
and if you promise to give us some more tunes, I'll very willingly pay
for you to come"--he looked amused--"on the great moonlight cruise."

The young man appeared gratified. "But I've a young lady with me," he
said, indicating the pretty girl.

"And bring her with you," said the old man heartily. "Your music will be
worth more than eighteen pence to me."

So the three at once took their seats in the launch, and example being
infectious, in less than five minutes, every place was filled and the
little vessel was pushing away from the pier to the tune of Auld Lang
Syne upon the concertina.

The passengers consisted of the old man, two young fellows and their
girls, two mothers with two small boys, and a middle-aged woman by
herself, a stout florid man who looked like a holidaying publican, and a
man of scholarly appearance who might have been a schoolmaster.

They were a happy, merry party as the launch chugged along, all except
Scampy, who was attending to the rattling engine and he kept looking
over his shoulder towards a bank of dark cloud that had begun to creep
slowly up over the Kentish coast.

"Blast it!" he muttered. "If I'd got a glass here I'd swear it would be
falling like the very devil. There's a storm coming. I'll stake my
blooming life."

But the dark bank of cloud was as yet only very small, and no one in the
boat had apparently noticed it. The concertina was reeling out melody
after melody, and all were joining in who could, when there were any
choruses to be sung.

They rounded the Maplin Light with out mishap, and by then night had
fallen. A hazy moon, at half full, had just risen, but the rapidly
approaching bank of clouds was threatening every minute to obscure it.
Suddenly there came a puff of wind, and the oily sea became stirred into
little waves. Another puff followed, and this time it was more
sustained. The waves became bigger and spray began to fleck over the
side of the launch. The women with the little boys looked uneasy, but
Scampy reassured them at once.

"It's nothing but a capful of wind, ladies and gents," he called out
happily, "and if it's going to rain, we'll be home long before it
starts."

But misfortune was in store, for suddenly Scampy darted to the engine
and switched it off. "Two cylinders missing," he announced, "but I'll
have it right in a jiffy. Don't anyone be worried," and pulling a small
greasy-looking bag from under one of the seats he took out some tools
and began fiddling about to find out what was occasioning the trouble.

The wind was freshening every moment now, and the Mary Belle began to
roll and bump unpleasantly in the troughs of the waves. The little boys
began to cry and one of them was sick. The women looked very frightened,
but the men put on bold fronts, and the young one with the concertina
took out and lighted a cigarette. The rolling, however, became more and
more pronounced and the spray began to wet everyone. Scampy was huddled
over the magneto and wording desperately with a file.

Suddenly then, one of the women shrieked. "Oh, how were drifting! That
buoy we were near when you stopped must be miles away now!"

"It's quite all right, I tell you, lady," shouted Scampy with some
effort to make his voice heard above the noise of the wind and the
banging of the waves. "Don't get worrying now, for I'll soon have her
going again."

"But I say, Captain," called out the man who looked like a schoolmaster.
"Hadn't we better anchor? This drifting broadside on seems very
dangerous to me!"

"It's not dangerous," shouted back Scampy, "if you keep still and don't
upset the balance of the boat. I can't anchor here, and we'll be much
safer nearer the shore. We'll be over shallow water in a couple of
minutes and there'll be no swell there."

But very soon the attitude of the majority of the passengers became one
of panic, and with every bump of the waves they clung frantically to one
another fearing the launch was going to be swamped. To add to their
terror Scampy now abandoned all pretence that he thought he could make
the engine start, and joined with his assistant in bailing desperately
with two pannikins that had evidently been provided for such an
emergency.

Alone of all the passengers, the three elder men kept their heads and
the stout and florid-looking one awoke to speech and took command at
once, as a born leader of men.

"All sway with the launch," he bawled in a voice like a bull's, "and
don't shift from your seats however much she rolls. I know this coast
well, and although we're a hell of a way from shore, we shall soon
ground in a couple of feet of water, and then we can run over the sands
on to the island. This is Foulness we're drifting on to."

And the toothless old man supported him valiantly. "Never mind the rain,
anyone," he shouted as big drops began to splatter the already soaked
passengers, "for the harder it comes the better. It'll beat the waves
down."

Then suddenly a great blinding light stabbed the darkness. It swept
round in a majestic arc and then, picking up the launch, remained
focussed upon it.

"Hoorah!" shouted the florid man, "they've seen us on the shore and now
were all as safe as if we were sleeping in our beds."

The launch swept forward, with the force of half a gale behind it, along
the silvered path cast by the search light, and a couple of minutes
later Scampy threw down his pannikin and darted for a large boat-hook.

"We're grounding; be ready to jump out," he shouted, and driving the
boat's hook down viciously over the side of the launch, the bow swung
round and pointed straight towards the shore.

Bump--bump--bump went the launch and almost in one movement Scampy and
the florid man had jumped overboard and were tugging at the stern to
prevent the little vessel turning sideways again.

"Now out with you all," bellowed Scampy. "Quick, quick! We'll not be
able to hold her long," and so in less than a minute all the passengers,
soaked and bedraggled, but most devoutly thankful, were scuttling for
the hard uncovered sand that the friendly search-light was picking out
for them.

Scampy, as became all glorious maritime tradition, was the last to leave
the launch, after having with one hand thrown out the anchor, and with
the other grabbed up his little bag of tools.

"But we must still be quick!" shouted the florid man, as shaking and
sobbing in their relief the little crowd of passengers were now
seemingly content to remain where they stood. "We must be quick, I say,
for it looks as if we've got a couple of miles yet to go, and with this
wind behind it the tide'll come up devilish fast. Come on, make for that
search-light. I'll carry one of the kids."

In the meantime, telephones had been buzzing furiously upon the island,
the guard had turned out, and a highly interesting hand of bridge been
cut short in the officers' mess. So when the little band of
excursionists, with the crew and captain of the Mary Belle bringing up
the rear, appeared at the big gate to the one opening in the barbed-wire
entanglements, they were met with what appeared to their dazzled eyes to
be a whole regiment of soldiers, with a tall aristocratic looking
officer standing at their head.

"Keep back," roared the sergeant of the guard as they made to shuffle
unceremoniously through the gate. "Wait and do as you are told."

"Let them through, sergeant," said the officer, in a finely modulated
voice. "They don't look very formidable to me." He glanced from one to
the other of the little crowd, and then asked sympathetically. "Who are
you, and who's in charge?"

Scampy stepped forward with importance. "Me, sir," he said. "Captain
Rook of the motor launch Mary Belle, of Southend, licensed to carry
twelve passengers. They're all here. Our engine broke down and we've
been driven on shore." He shook himself dismally. "We're all soaking wet
through, sir."

"So I perceive," smiled the officer. He turned to a younger man behind
him. "Take the ladies and the little boys at once into the infirmary,
please, Mr. Rainey, and tell Matron to do what she can for them in the
way of clothes." He turned to the sergeant. "Take these gentlemen into
the guard room. I'll be there in a minute. I want to speak to them."

The seven men were led away into a room close by, and Scampy started at
once to wring the water from his clothes.

"Here you stop that," roared the sergeant, very red in the face. "Wait
until you're outside again."

Scampy regarded him scowlingly. "I was in the Metropolitan Police Force
once," he commented gruffly, "and I got kicked out for knocking down my
superior officer." He paused significantly. "He was a sergeant, too."

Whatever remark the furious sergeant was about to make died on his lips,
for at that moment the pleasant-speaking officer entered the room.

"This island is a Government reserve," said the latter at once, "and I
am the commanding officer here. I shall have to ask you a few
questions." He made a gesture to the sergeant, who bottled his wrath
with a great effort, produced a sheet of foolscap paper from a drawer
and made ready to write the answers down.

"Well, are you all British subjects?" asked the officer. "Good! then now
give me your names, addresses and occupations, please." He looked at
Scampy. "I'll take you first."

"John Ebenezer Rook," said Scampy, "captain of motor launch, Mary Belle,
and of 21 Peele street, Southend. Born in Hoxton, 38 years ago."

And then each in turn told of himself. The two young men, it appeared,
worked in the City, one was a clerk and the other behind the counter in
a haberdasher's shop; the scholarly-looking man was a butcher in the
Mile End road; the florid-faced one was the verger of St. Michael's
Church in Stepney; and the toothless old man worked at a tailor's in
Houndsditch. They were all trippers to Southend, and produced the return
halves of their tickets in evidence.

The officer seemed quite satisfied, and so, in a few minutes, all seven
of the shipwrecked men, in varying stages of nakedness, were drying
their soaked clothes before a roaring fire in a small ward of the island
infirmary, and fitting themselves out in sundry garments that had been
lent to them.

Steaming cups of coffee and thick ham sandwiches were brought in, and
they were informed that the women of the party were likewise being cared
for.

A young officer attended by an orderly came in presently and told them
they were to remain for the night, and that the following morning about
eight o'clock an aeroplane would pick them up on the sands and return
them to Southend. He added most politely that he was sorry to tell
Captain Rook his motor launch was now a total wreck. Its anchor had
dragged, and the little vessel had been dashed to pieces against the
seawall.

Scampy tried his hardest to look very glum, but inwardly he was
chortling with joy. That would mean another 75, and added to the 150
he had stowed away behind the kitchen sink at home, he thought he had
done very well, even if he did not get a penny piece more.

"Never mind," he said with a gesture of manly resignation. "I've saved
my passengers, and that's the main thing."

"Bravo!" exclaimed the toothless old tailor with enthusiasm. "That's the
true old sea-dog spirit that has made our country great."

"One thing," grinned Scampy when the chorus of approval had subsided.
"I've salvaged something, for I've saved my bag of tools," and he
pointed to the oily-looking bag that he had never let out of his hands
until he had come into the ward.

The officers left them and the orderly, ascertaining they were needing
nothing more, also bade them good night.

"You'll be locked in, gents," he said in parting. "It's the colonel's
orders, because as you know you really oughtn't to be here," and he
pulled the door to and they heard the lock click.

Then to everyone's surprise they saw that Scampy's oily bag held more
than dirty tools, for he produced from it a full bottle of whisky, and
the spirit was promptly divided among them all, to insure as the
generous donor put it, the soothing of their nerves. Then another
surprise followed, for the old tailor, with a gleeful chuckle, tugged
out from one of his overcoat pockets a pint of strong navy rum and
insisted that everyone should share and share alike.

So, shortly after midnight, it was a thoroughly sleepy and slightly
befuddled lot that betook themselves to their beds, and very speedily
the potency of the ardent spirits they had imbibed was evidenced by
their deep and heavy breathing.

An hour passed, nearly two, and the light from the fire flickered and
grew dim, so dim that when a stealthy figure slipped ghost-like from one
of the beds it almost cast no shadow. Whoever he was the figure moved
with the stealthiness of a panther and the keenest ears could have
detected no sound as he crept across the room.

From the coats drying before the fire he selected a dark one, and then
he went quickly over to Scampy's bag of tools and, flashing the smallest
of torches, opened it noiselessly, and after a few moments' search
abstracted a little screw-driver.

Then he tip-toed over to the locked door of the ward and kneeling down,
swiftly, and taking extreme care that he made no sound, proceeded to
remove the four screws that held the bolt housing of the lock to the
frame of the door-way.

The door swung ajar, and for a long minute he crouched, staring down the
dark passage that stretched away before him. All was silent except for
the sighing of the wind and the distant moaning of the sea. The storm
had almost died down and he could see from a small skylight that a
fitful moon was showing.

Satisfied apparently at last that there was no one about, he placed the
part of the lock he had removed in a corner where he could easily find
it again, and after a moment's hesitation, pocketed the four screws.
Then the darkness of the passage swallowed him up.

Two hours and longer passed before he returned, and then he darted into
the ward like a hunted creature. He was panting heavily, his heart was
thumping like a piston, and he was covered in a cold sweat. One of his
hands was sticky with blood. He pulled the door to like lightning and
without flashing his torch groped for and found the bolt housing. Then
with feverish haste, and with hands that shook, he started to replace
the four screws. To his consternation, however, he found that he had
only got two of them and that the other two must have fallen out of his
pocket. But he gave no time to his dismay, and, his hands steadying, he
screwed on the housing as best he could.

Then it might almost have seemed that his intentions were sinister ones,
for, creeping from bed to bed, he stared hard, one by one, into all the
faces of the sleepers. But they were all in dead slumber, and he turned
away. Next he took off the jacket he had been wearing, and, spreading it
out upon the floor, went over it every inch with his little torch. One
small spot appeared to occasion him considerable anxiety, and he dabbed
at it many times with water that he carried over in a tumbler that he
took off one of the water bottles.

Then he returned the jacket from where he had taken it, and with one of
his socks most carefully rubbed over all parts of the lock and the door
where it was possible he might have left a finger mark.

Finally he crept back into his bed, and closing his eyes, tried
resolutely to fall asleep, but for many many minutes his ears were
straining for a sudden shout outside, and it was not until dawn was just
breaking that he sank into a troubled doze.

At seven o'clock the door of the ward was opened noisily, and flung back
with a loud bang. Biscuits and cups of steaming coffee were brought in.
Everyone was told to get ready quickly for the aeroplane would be upon
the sands in a few minutes.

It was a fine morning, and the little party, now joined by the women and
the two small boys, were escorted by two soldiers through the opening in
the barbed wire entanglements. They were all in high spirits, and Scampy
had a hard job to pull a glum face when they passed by all that remained
of the Mary Belle. He would have liked to have stopped for a few
moments, but the plane was waiting for them, and they were hurried away.

The journey was a very short one, and landing in the aerodrome at
Southend they all shook hands vigorously with one another, and dispersed
in different ways.

Half an hour later the telephone from Foulness started to ring
furiously, and the Southend police were being frantically enjoined to
get in touch with and hold every one of the party who had been sheltered
on the island the previous night.

A sentry had been murdered and his body had been found hidden under a
tarpaulin, covering over some bags of cement! He had been stabbed with
his own bayonet through the heart!




CHAPTER V.--LAROSE TAKES UP THE TRAIL


A few days after the wrecking of the Mary Belle, Gilbert Larose, the one
time international detective, now a country squire and married to the
beautiful and wealthy widow, who up to the time of her marriage with him
had been Lady Helen Ardane, was sitting with three companions in the big
lounge of his home at Carmel Abbey.

It was the hour before dinner, the evening was chilly, and a huge
log-fire was burning in the enormous grate.

All four men were comfortably tired after a long day with the pheasants.
There had been a goodly number of guns at the shoot, but the others
participating in it had just made their good-byes and gone off in their
cars and only the three, now with their host, were staying the night at
the Abbey.

One of them was Sir Herbert Carnaby, with courtly and old-world manners,
a second was the aristocratic Colonel Bevan, of the Air Force, and the
third was a quiet-looking little man, plain Mr. Grant, whose occupation,
if he had any, no one apparently knew. This last man was about fifty
years of age, and Larose had met him for the first time the previous
night, when he had come down with Sir Herbert.

They were talking about the incidents of the shoot.

"A most delightful day," remarked Sir Herbert, "and probably we had some
of the finest shots in the kingdom among us. The shooting of Major
Turnbill was magnificent, and the way he brought down those two last
birds is a thing to remember. I never thought he'd get either of them;
they came over so fast and so high."

"And Lord Banting!" supplemented Colonel Bevan. "A fine workman and
never anything ragged about his shots, ready to the hundredth part of
the second!"

Gilbert Larose shook his head and made a wry face. "But I think,
gentleman," he said judicially, "that, although we mayn't exactly like
to admit it, a foreigner beat us all, for no one quite came up to Herr
Mitter. He never missed his bird all day, and dropped every one with the
precision of a machine. He got a right and left by that last coppice
with perfectly magnificent shots, when I would have sworn he had
purposely given them too much law and let them get clean away. My
head-keeper thinks he's a marvel!"

A short silence followed, and then Sir Herbert asked carelessly. "And is
the Herr a great friend of yours, Mr. Larose? Do you know him well?"

"Yes," nodded Larose, "I know him quite well"--he hesitated--"but, no-o
he's not exactly a great friend, although I certainly see a lot of him.
I often go to his place at Dunwich, for we have antiquarian tastes in
common, and part of the cloister of an age-old Franciscan priory forms
two of the walls of his house. Still"--he hesitated again--"I couldn't
say we were great friends, for I really don't understand him well
enough."

It was now Sir Herbert's turn to hesitate. "Well, as you say you see him
often," he remarked after a short pause, "and it happens we were
discussing him just before you joined us now. Will you sum up his
character for us as far as you can determine it?" he made an apologetic
gesture. "That is, of course, if you don't mind dissecting one of your
friends."

"Certainly, I don't mind," replied Larose with a smile, "for, as a
matter of fact, although as I say, I know him quite well in some ways, I
am yet as curious about him as, apparently, are you."

He thought for a moment and then spoke very slowly. "Herr Mitter is a
very capable and resourceful man. He wishes to give everyone the
impression that he is most casual and easy-going, but in reality he is
nothing of the kind. He is very purposeful, very determined, and
everything he does he does well. He is a gentleman, but all the same I
wouldn't like him as an enemy, for he could be perfectly relentless and
have no pity at all."

Sir Herbert nodded as if he quite understood. "Certainly, a very
interesting personality!" he remarked. He indicated his two companions.
"We have, none of us, of course, met him before today, but like you, we
are of the opinion he is a man of strong character." He looked intently
at Larose. "But I gather from what he was telling us all at luncheon
that his great passion in life is painting."

"'Yes, and he's a real artist there," replied Larose. "He paints as well
as he shoots." He smiled. "As I say, he'd be something of a master in
whatsoever he took up."

That night at dinner Sir Herbert Carnaby said banteringly to his
hostess. "And has your husband quite settled down, Mrs. Larose? Is he
quite resigned now to the humdrum of country life, after all his
exciting adventures in the underworld?"

The beautiful face of Helen Larose clouded, and she shook her head with
a pretence of great sorrow.

"No, he isn't," she replied quickly. "He's not resigned to it at all,
and he'd much rather blacken his face and go hobnobbing with criminals
in the East End than stay here with me."

Sir Herbert appeared to be very shocked. "Good heavens!" he exclaimed,
"then if that's the case, you ought to let him go at once, and find
consolation elsewhere." He gave a little cough. "I won't mention any
names, but I know several who would gladly take his place, and they are
not far away either."

"Thank you, Sir Herbert," laughed Mrs. Larose. "I may be asking you for
their names much sooner than you might expect." She looked most
disapprovingly at her husband. "If they hadn't found that Hoxton
murderer last week I'm sure I might have awakened any morning and found
I was alone!"

"No, no," laughed Larose, "no more common and vulgar murderers for me,
Helen. I'd want to go after someone who'd hit back. That's where the
thrill comes in." He turned to the others at the table and went on
reminiscently. "Years ago, I once trailed a man to the dark passage of
an untenanted house, in the dead of night, and I always regard that as,
perhaps, the most thrilling experience of my whole life. He was a
desperate man, and wanted for murder; we were both armed, and we each
knew the other was there, but neither of us dared move lest the
slightest sound should betray our position for the bullet. So there we
both crouched, knowing that from between three and four hours must
elapse before the faintest light would come from a small window and
then, it would mean death for one or the other of us." He frowned and
shook his head. "I cannot describe the horrible feeling, and yet there
was a sort of dreadful joy in it, as when a gambler is staking
everything upon one single throw of the dice."

"And how did it end?" asked Colonel Bevan.

Larose laughed. "Oh! very tamely. The other chap went to sleep and I was
able to get his gun and handcuff him before he was properly awake. I had
been crouching down, however, it must have been for about two hours, and
then, to my amazement, I heard a gentle snore. I couldn't believe at
first that he had really gone to sleep, and thought it was just a trap.
But the snoring went on and became louder and so I started to creep in
his direction. I touched his body and then felt up for his pistol hand.
The rest was child's play, and he hadn't time to utter a word before it
was all over."

"Poor fellow," exclaimed one of the ladies present. "And was he hanged
afterwards?"

"Oh, no," replied Larose, "he was acquitted at the trial. He put up the
weakest alibi I have ever heard, but it happened, as we found out
afterwards, there was a life-long enemy of the dead man upon the jury
and, a very plausible fellow, this chap persuaded the others to let him
off. It was a quarrel over a girl, and she was very pretty and gave
evidence for my snoring friend. He married her later on, and he's quite
a respectable member of the community now."

"But perhaps he wasn't guilty after all?" suggested the lady.

"Oh! wasn't he?" laughed Larose again. "He came to see me afterwards and
practically admitted it. He was quite a pleasant fellow, and very
curious to learn how I'd found out that he'd fallen asleep that night.
He never knew he snored!"

Later on, when after two hands of bridge and some music the ladies had
gone up to bed, and the four men were together over a last cigarette
before the library fire, Sir Herbert leant down and whispered something
to Mr. Grant and then turned with a decisive movement to Larose.

"Look here, Mr. Larose," he said impressively. "We know we can trust you
and we think you can do us a great service. It's about that Herr Mitter,
and if you often go to his place, tell us what sort of people do you
meet there?"

"What do you mean?" asked Larose, looking very puzzled.

"Well, has he many visitors, and if so, do you, among them, meet many
army and navy men, or officers connected with the air-force?"

"Most certainly I do," replied Larose, "and he seems very popular among
all the three services." He nodded. "And I don't wonder at it, for he's
very hospitable and keeps open house for all his friends. He has a
first-class cook and the best of wines. His hock, by the bye, must be
about the finest vintage in the world." He smiled. "Also there are
always plenty of pretty girls coming out in their cars to see the Herr.
It's just a nice little drive from both Colchester and Ipswich."

There was a moment's silence and then Sir Herbert said sharply. "Now we
shall be very much beholden to you if you will tell us all you can about
this gentleman, for to put it bluntly"--he looked grimly at
Larose--"this Herr Mitter of yours is a spy."

Larose gasped incredulously. "What!" he exclaimed. "Mitter a spy! Surely
it can't be so!"

"But it is, right enough," nodded Sir Herbert sternly, "and we have been
aware of it for a long time now. He is in the Secret Service of his
country, and his place in Dunwich is the clearing-house for reports that
are forwarded by his agents from all parts of the kingdom."

"Well, well!" went on Larose, still appearing as if unable to credit the
statement, "and yet he seems so friendly disposed towards us! He's
always saying how he loves the country and how kind everyone is to him!"

"I daresay," sniffed Sir Herbert contemptuously. "No doubt he is a fine
actor." He continued. "Now, we want you----"

"One moment, please, Sir Herbert," interrupted Colonel Bevan quickly.
"We'd better introduce Grant properly, first." He turned to Larose. "Mr.
Grant here is the head of the C. department of our Secret Service, and
is responsible for all the counter-espionage in this country."

"Whew!" whistled Larose, regarding the little man with great interest.
"The mysterious recluse of Whitehall, whose anonymity is so jealously
preserved." He bowed towards Mr. Grant. "Of course I have heard of the
wonderful work your department does, sir, and I am sure it is an honor
to be trusted and be told whom you are."

Mr. Grant smilingly acknowledged the compliment. "We are certain we are
running no risks in taking you into our confidence, Mr. Larose," he
said, "and, indeed I regard it as a most fortunate happening that Sir
Herbert brought me down here yesterday."

"Oh! why is that?" asked Larose, looking rather puzzled.

"Because, having met this Herr Mitter," was the reply, "we have formed
quite a new estimation of his character. We are convinced now he is
anything but the third-rate Secret Service agent his correspondence and
telephone calls have been leading us to believe." Mr. Grant frowned.
"Yes, we have been well bluffed there, for probably we have not been
finding out one quarter of what he is doing." He shook his head. "He
looks dangerous, very dangerous, and it may now turn out, too, he is the
very man we have been trying to uncover for many a long day, the master
spirit of them all."

"Good gracious, but what on earth can you have found out about him
today?" asked Larose, looking more puzzled still. "You have only been in
his company such a short time and you can have had very little
opportunity for conversation with him."

"No, but having been brought face to face with him as we were for the
first time this morning, we are most profoundly and unpleasantly
impressed with his strength of personality, and we realise how we have
been under-estimating him. We are now convinced the paltry little items
of information that from time to time he mails abroad cannot possibly
represent the sum total of his activities over here. He must be playing
a much deeper game."

"But I think you must add, Grant," said Sir Herbert quickly, "that those
two discoveries of last week had in part prepared us for this change in
our ideas."

"Quite so," agreed Mr. Grant, "for they certainly did suggest that we
were under-estimating him." He turned to Larose. "It's a long story, but
I will make it very short." He spoke impressively. "Now for nearly two
years we have been rendered most uneasy by the extent to which
information of what we are doing has been reaching a certain country.
Our own agents there have been continually reporting to us a knowledge
by the authorities of things and happenings that we believed to be among
our most closely guarded secrets. To mention only a few--they have come
to know all about our new type of torpedoes; they are copying our new
fuses, and certain special modifications in our aeroplanes are being
adopted by them, too." He shook his head vexatiously. "It has been as if
some master mind were directing an organisation over here, and with such
success that few of our secrets remained secrets very long."

Larose looked most concerned. "Then they have learned about that
invisible glass!" he exclaimed quickly.

"No, no," replied Mr. Grant. "So far we have been able to baulk them
there, although we are certain they are now making that their special
objective," he nodded significantly--"and are unhappily getting very
close, too. Indeed we are reluctantly forced to the conclusion that they
have learnt somehow where it is being made, for we believe that within
the last few days, a most daring attempt has been made to get hold of
some of the material."

He continued. "But to return to Herr Mitter. Just about a year ago, a
foreigner who was double-crossing his own people and working for us, a
man by name of Lieder reported that a Herr Mitter of Dunwich Hall was
mixed up in an espionage organisation here, in our midst, and that he,
Lieder, had been ordered by his people to get in touch with him and work
under him in spying over here. Then to our great dismay, within a few
days of having given us this information, this Lieder disappeared, and
we have heard nothing more of him since. He vanished, too, under very
sinister circumstances, for we know he was going down to Dunwich, and we
always wonder if Mitter had been warned he was in our employ, and in
some way managed to make away with him."

"But you don't know this man actually visited the Herr?" asked Larose
with a frown.

"No, we can't be certain there, for at that time we were not watching
Mitter as closely as we are now. We have since taken Mitter's butler, an
ex-army man, into our service, but he unhappily does not remember if
anyone answering to Lieder's description came down to Dunwich, for then
he was not interested in any of Mitter's visitors and he says, as you
do, that there have always been a lot of people calling there."

"This butler's not too intelligent," supplemented Colonel Bevan, "and
the information he has supplied has been of no real value. He says he
has to attend to Mitter's two cars and is a lot in the garage in
consequence. Also, he is always being sent on errands and misses a lot
of the visitors in that way."

"And have you had Mitter shadowed when he goes away from Dunwich?" asked
Larose.

"Not to any extent," replied Mr. Grant, "for we haven't dared to. We
have been very careful not to arouse in him any ideas that he is under
observation, and as he drives very fast and often makes his journey by
way of the smaller by-roads, we decided we couldn't follow him without
his becoming aware of it. Practically all we have done, until last week,
has been to tap his correspondence and his telephone and depend upon the
butler's reports."

"Until last week, you say?" commented Larose. "Well, what have you been
doing since then?"

"We've installed a man in the village there, and he's been finding out
all he can. He's supposed to be an artist." Mr. Grant nodded. "The whole
district between Aldeburgh and Southwold is over-run with people who
paint, as I expect you know."

"And what are the two things, then, that you say you have recently found
out about Herr Mitter?" asked Larose.

"The first one is this," replied Mr. Grant, "and it proves most
conclusively that Mitter is in the habit of assuming another personality
at times when he's away from Dunwich. Now listen carefully. Just about a
year ago a young officer, a Lieutenant Culley, was on duty in the Tower
of London and met with an accident by slipping upon a piece of banana
skin. He fell and struck his head with great violence upon the stone
pavement and was rendered unconscious. Only for about half a minute,
however, and then, beginning to come round, he stared up at the faces of
several men who were standing over him. Of course he was very dazed and
could not at first realise what had happened, but he declares that the
faces he saw during those few moments made an indelible impression upon
his memory, so much so that they haunted him for many weeks after and he
could never entirely forget them."

"Quite feasible," nodded Larose. "I have noticed myself that in moments
of great stress the eye takes an instantaneous photograph of everything,
and we can recall it, even after years and years."

"Well, last week, when in the city," went on Mr. Grant, "he encountered
one of these men again and he remembered him instantly. He was dressed
in rough, common clothes, and looked as if he belonged to some ship.
Young Culley had plenty of time to take him in, for he was standing
waiting until the traffic was held up to cross the street in Mark Lane.
Culley says he would have gone up and spoken to him if the fellow had
not looked so gloomy and grim."

Mr. Grant raised his hand in emphasis. "Well, now for the sequel. Upon
the night of that same day this young lieutenant was present at the
Yacht Club Ball in Harwich and, being introduced to Herr Mitter by a
brother officer, he recognised him instantly as the man of both the
Tower and Mark Lane, except"--he spoke very slowly--"that the Herr had
now shed his beard and was clean-shaven, as he always is!"

"Most interesting!" commented Larose frowning thoughtfully, "and how did
you come to hear of it?"

"Lieutenant Culley told his father who was in the Intelligence
Department during the Great War, but is an old man and retired now, and
the latter rang me up at once. He has always had a suspicion of all
foreigners."

A short silence followed and then Mr. Grant continued. "Now you will
realise how we are trusting you when I go on to tell you of our second
discovery touching the very versatile Herr Mitter. The invisible glass
is being manufactured on Foulness Island. You know where that is, of
course? Well, up to last week, a week ago today, we had always prided
ourselves that no unauthorised persons could by any possibility get on
that island. We had taken such infinite precautions that we felt sure we
were quite secure."

He shook his head. "But we were quite mistaken, for last Thursday, at
about nine o'clock at night, a little motor launch out for a moonlight
cruise from Southend, broke down when off the Maplin Light and, a sharp
wind springing up, it was driven broadside-on on to the island and
broken up. It was carrying twelve excursionists, men women and children,
and along with its proprietor and his assistant they had of course, to
be given shelter for the night. The whole happening appeared to be quite
an accidental one and everyone from the launch inoffensive and exactly
what they stated themselves to be. The commanding office of the garrison
upon the island questioned them minutely and was of opinion that their
answers were all satisfactory. Of the five men passengers, one said he
was a city clerk; another that he was a shopman; a third, a tailor; a
fourth, the verger of an East End Church; and the fifth, a butcher. So
they were all----"

"One moment, please," interrupted Larose. "Was any attempt made to
verify their statements?"

"Not at the time," replied Mr. Grant, "for it was impracticable, as only
one of them was on the telephone." He went on. "Well the women were
taken in charge by the matron and nurses of the island infirmary, and
the men were locked up for the night in one of the wards. An aeroplane
from Southend, only eight miles distant, was telephoned for to fetch
them in the morning."

"Why not straight away that same night?" asked Larose.

"Because no civilian aeroplanes are ever allowed to alight upon the
island, and it was judged wise to wait for the morning when the Southend
plane could pick them up upon the sands."

"But why weren't they sent back in one of the planes upon the island?"
asked Larose. "It is common knowledge that there is a big aerodrome
there."

"There are special features about every plane used for the island work,"
replied Mr. Grant, "and we never let the public get too close a view of
them." He continued. "Well, the night seemed to pass uneventfully, and
by eight o'clock the next morning everyone who had come in the launch
was being flown back to Southend, but in less than twenty minutes after
they had gone there was consternation upon the island"--he paused
dramatically--"for it had been found a sentry had been murdered during
the night and his body hidden under a tarpaulin!"

"Good God!" exclaimed Larose, "one of the excursionists!"

Mr. Grant nodded. "Yes, the sentry was missing at eight o'clock when the
sergeant went to change the guard round the compound where the factories
are, and tardily noticing some tracks of blood and disturbance in the
ground, as if a body had been dragged along, they followed them to where
some bags of cement were stacked by one of the outhouses, and protected
from the weather by the large sheet of tarpaulin." He shook his head
frowningly. "It was a most diabolical murder, and carried out in the
most daring way possible, for from all signs the poor fellow had been
first stunned, where he stood, with a bar of iron, and then he had been
dragged unconscious to where the cement was, and, with his own bayonet,
stabbed through the heart. When they found his body it was estimated he
had been dead for about four hours."

Mr. Grant shrugged his shoulders. "Of course, everyone was dumbfounded,
and for a few minutes no one could hazard even the very slightest
conjecture as to who might have been the murderer. Then suddenly someone
thought of the excursionists, and a rush was at once made to the
infirmary to see if there was any indication that any of the men had
left the ward during the night." He made a gesture of resignation.
"There was no doubt about anything. The lock had been unscrewed and then
replaced, minus some screws; there was a smear of blood upon the floor
near the door, and another smear upon a water-bottle upon a shelf near
one of the beds."

"Finger-marks in the blood smears?" queried Larose.

"No, unfortunately, only smears as if the blood had been nearly dry when
they were made. Then with these startling discoveries the Southend
police were, of course, rung up instantly, and enjoined to get in touch
with the excursionists, all of whom had said they were lodging in the
town. They were all found but one, and he had not only not been lodging
where he said, but, as was ascertained later, the address he had given
in London was also a false one, and he had never been heard of there. He
was----"

"The verger of the church!" interrupted Larose.

"No, the tailor, an amiable old man and, according to Colonel Maitland,
seemingly the most unlikely of them all to have committed any crime.
Another thing, among the finger-prints found in various places in the
ward, and upon the cups in which they had been given their morning
coffee, the only ones of which no traces could be found were those of
this man. It is undoubted that he had wiped his cup after drinking from
it."

"But does all this in any way connect up with Mitter?" asked Larose,
after a moment's cogitation.

"Yes, in a most startling manner," replied Mr. Grant, "and in one that
leaves no doubt in our minds that Mitter is involved in some way, in
what happened that night upon Foulness. We are forced to that conclusion
by a discovery made, only last Sunday morning, by that man of ours who
is now stationed at Dunwich. He saw Mitter start off upon a walk along
the cliffs and followed him. Presently Mitter came to the trunk of a
fallen tree, lying by the edge of the cliff, and was about to seat
himself upon it, when he, apparently, noticed the trunk was damp from a
shower of rain of not an hour previously. So he took a newspaper out of
his overcoat pocket, and, unfolding it, spread it upon the tree trunk to
keep his clothes clean. Then, when after a few minutes he got up and
resumed his walk, he left the newspaper behind and our man, out of
curiosity, strolled over and inspected it."

Mr. Grant nodded significantly. "That newspaper, sir, was a copy of the
'Southend Chronicle' of the week before last, but not only that, for
upon the tide-table on one of the pages, the time when it was going to
be low-water round the Maplin Sands, on the very night of the Foulness
murder, was scored under with a pencil."

"But was Mitter away from Dunwich any night that week?" asked Larose.

"No," replied Mr. Grant, with a frown, "his butler says he was hard at
work upon a painting in his studio upon every day of that week, and
never left the house." He went on. "Of course, we do not for one moment
believe that the man who declared he was a tailor was Mitter, but we do
think Mitter knows of the outrage on Foulness, and that he may have had
some hand in the preparations for what was so obviously, an attempt to
get hold of a piece of the invisible glass."

Larose looked doubtful. "But isn't that deducing a great deal from very
little?" he asked. "And if, as you say, the launch was driven upon the
island by a sudden storm, how could it have been a premeditated act?
What does the man in charge of the launch say?"

"Ah!" exclaimed Mr. Grant, "that, of course, may raise some doubt"--he
shook his head--"but at the same time there are some very suspicious
circumstances even there. The man in charge, the skipper, was the owner
of the launch, and he states most emphatically that but for the sudden
burst of wind the launch would never have gone within miles of the
island. On the other hand, the passengers all unanimously declare that
he switched off the engine before the storm had started, and one of
them, the butcher, a man of intelligence and from all reports of most
impeccable character, is strongly of opinion that the engine was
functioning quite perfectly until the skipper began to start pulling it
about. This butcher, too, has a motor delivery van, and doing all his
own repairs, should know something about motor engines."

"And the skipper, of course, denies that he knows anything of the man
who gave the false address?" suggested Larose.

"Yes; he swears he had never seen him before," replied Mr. Grant, "but,
then again, there is something peculiar there, for when the launch was
at the pier head that night and he was shouting for passengers and no
one seemed inclined to come, this old man who said afterwards he was a
tailor, seemed to act the part of a sort of decoy by himself paying for
a young fellow to come, if the latter would promise to give them some
more tunes upon a concertina upon which he had already been playing.
That undoubtedly induced others to follow, and the launch speedily
filled."

"Hum!" remarked Larose thoughtfully. "A lot of little things, but they
certainly mount up."

"But there's one thing more," went on Mr. Grant, "and to my thinking it
is the most convincing evidence that there was some scheming somewhere."
He spoke very slowly. "This man Rook, the skipper of that motor launch,
after having been known for many months to be living from hand to mouth,
is now in the possession of money, and two days after the wrecking of
his boat he paid down no less a sum than 200 towards the purchase of a
public house in the little village of Battlebridge, a few miles from
Southend.

"Oh! Oh!" exclaimed Larose. "Now you ought to be able to find out
something."

But Mr. Grant shook his head. "No. We are up against a dead wall there,
for the man states he had been saving up the money for years and years,
unbeknown even to his wife, and we cannot prove to the contrary. It
appears he is a bold, determined fellow with a bulldog courage, and he
is quite aware that if he sticks to his story he is perfectly safe. He
was a policeman once, and is afraid of no one."

"And was there nothing suspicious about any of the other excursionists?"
asked Larose.

"Nothing at all! They are all what they purported to be--quite
respectable people in humble walks of life, and they all gave their
correct addresses and occupations."

"Do they know this other fellow is wanted for murder?"

"No, it was judged best that the sentry's death should not be broadcast,
and so they were just told that one of them had broken out of the ward
during the night and stolen from one of the officers."

"And you don't think this man succeeded in getting into any of the
factories or the place where this glass is made?"

"No. Happily we can be quite certain there for all the fastenings were
intact and none of the inside watchmen had anything to report."

A long silence followed, and then Larose suddenly threw back his head
and began to laugh. "And I was only thinking today that adventure would
never be coming my way any more, but here it is at my very door." He
sobered down instantly, and his eyes glinted. "Yes. I'll take it on," he
said. "I'll help you in any way I can!"

"Then you'll cultivate Herr Mitter more," began Sir Herbert, "and
you'll----"

"No, no," interrupted Larose sharply, "that's not the way to set about
it. We must pick up the trail from where it started, and not try and
work backwards from Mitter himself." He rubbed his hands together
delightedly. "Yes, I'll come up to town with you to-morrow and be flown
over to Foulness Island"--he hesitated a moment--"after I've had a
little talk with Lieutenant Culley and spent an hour or so in the City.
I've a great idea that we'll find out something very quickly."

And find out something, very quickly, Larose did, for the next evening a
few minutes before six o'clock, and just when Mr. Grant was about to
leave Whitehall for his home, he was being ushered into room thirteen,
all prepared to furnish a very important piece of information.

"Yes," he began briskly and with no preamble, "you are quite right in
one thing about Herr Mitter. He is probably a very dangerous man, and
most likely to be a deadly enemy of Great Britain. His real name is
Mangans, and his father was Leopold Mangans, the spy who was shot in the
Tower on September 28th, 1914. I have seen a photograph of Mangans, and
Mitter is his living image. Mitter probably visits the Tower upon every
anniversary of his father's death. Lieutenant Culley met with his
accident on September 28th last year, and it was upon September 28th
last week that he encountered Mitter in Mark lane. Mitter had evidently
just been making his annual pilgrimage to the Tower, and no wonder the
lieutenant thought him looking sullen and grim."

"But how in heaven's name did you guess----" began Mr. Grant with eyes
wide in his astonishment.

"I didn't guess at all," interrupted Larose sharply. "I associated Mark
Lane with the Tower directly you mentioned the street, for the two
places are so near to one another, and then questioning Lieutenant
Culley, the coincidence of the two dates struck me instantly. After that
a few enquiries at the Tower settled the matter beyond doubt."

Mr. Grant bowed. "You are a great artist, Mr. Larose," he said quietly,
"and already we are much beholden to you."




CHAPTER VI.--THE CONSPIRATORS


The chimes of the beautiful old clock in the lounge of Dunwich Hall had
just tinkled the hour of eleven upon the night of the same day that
Larose had made his startling announcement to Mr. Grant, when Margaret
Advent, Herr Mitter's parlormaid, scraped lightly upon her master's
studio door and a low voice bade her enter.

Margaret was certainly a very pretty girl and no one would have said she
came of common stock. Built rather on the tall side, she had a supple
and beautifully proportioned figure. Her profile was clean-cut and
aristocratic, she had large grey eyes, a very pretty mouth, and a
faultless complexion. Her hands were small and dainty.

She had no knowledge who her parents were, for one night, the night of
Advent Sunday, nearly two and twenty years ago, she had been found upon
the doorstep of the Foundling Hospital.

"A love child, of course!" had nodded the grizzled old doctor, when he
had first examined the pink and white bundle that had been lifted from
the basket. "What despicable people there are in this world! Someone has
taken the best that life can offer and yet been willing to make no
sacrifice in return!" He shook his head. "But how I'd like to punish
them!"

And so Margaret had grown up in the usual way of those whose parents
have given all to passion and nothing to its consequences--Foundling
Hospital. Babies' Homes, a cold and money-stinted orphanage, and then
out into domestic service.

Her first place had been in a country vicarage, with a childless old
clergyman and his wife. She had been very fortunate there, and treated
with great kindness, among many privileges and had been allowed the
unrestricted use of an excellent library. Then her master, noting the
bent of her inclinations, had mapped out a course of studies. He had
given her lessons in French and German and been delighted with the
proficiency she had so quickly acquired. "One day, my dear," he once
said smilingly, "you should have a much better position than that of a
domestic servant. You have brains and intelligence and if you pick your
steps carefully, who knows what your future may not be. Any man should
be proud to have you for his wife."

The old clergyman dying, she had next obtained a situation with a titled
woman of considerable means, and had there been trained most efficiently
in the higher walks of her calling.

With her attractive appearance she had, naturally, had plenty of
admirers, both among her fellow servants, and the many visitors who had
come to stay with her titled mistress, but with a strength of character
she could hardly have inherited from her mother, she had shrouded
herself in cold reserve and firmly checked all advances. She had set a
value upon herself and was not going to give herself to anyone lightly.

Tiring at length of her surroundings there and desirous of a quieter
life, she had answered an advertisement in the 'Morning Post' and so had
come to Dunwich Hall, quite heart-whole and mistress of her affections.

She had liked the place from the very first, and her master, too, for
recognising at once that she was no ordinary servant, he had soon put
her on a different footing to the others and entrusted her with many
little matters that, up to then, he had always done for himself. He let
her tidy his desk, file any letters that he wanted keeping, and gave her
charge of the household accounts. Later, too, he encouraged her to
practice upon his typewriter and in time she attended to any unimportant
correspondence for him.

So gradually, but with Mitter always treating her with great respect, an
intimacy sprang up between them. Subordinating all his passions to the
one of avenging his father and serving his country, Mitter had all his
life allowed himself no weakness for the other sex, and for a long time
his liking for Margaret--she had told him the story of her life--was
mainly of pity and entirely devoid of self-interest. But it was
unnatural he could go on for ever uninfluenced by her beauty, and one
day as he was bending over her when she was writing, and their heads
came close together, upon the impulse of the moment--he kissed her.

"But I'm a servant, Herr Mitter!" she gasped indignantly and with
heightened color. "You forget that!"

He was angry with himself for what he had done, but did not allow her to
perceive any sign of it.

"There is no need for forgetting that," he smiled, "because I never
remember you as one. You are as perfect a little lady as any of the
society girls who come here, and it is only by an unhappy chance that
you are not in your right position now. Perhaps, one day your parents
will claim you, and, then all will come right." He patted her shoulder
gently. "Now, you forget that I have kissed you, and then no harm will
have been done."

But she did not forget it. His caress had awakened in her the knowledge,
that if she did not actually love him, she was nevertheless very fond of
him, and the woman-nature in her thrilled at the realisation. So it was
not very long before Mitter saw from her manner towards him that his
attentions would not be unwelcome, and he smiled to himself at the hold,
he could so plainly see, that he had obtained upon her.

But he was by no means a passionate man, and never attempted to pursue
the adventure any further, being quite content to bind the girl to him
by a liking that, he knew, would be all the stronger, because it was
permitted of no outward manifestation. As we have said, he was not
minded to entangle himself in any intrigue that might tend to weaken the
great single purpose of his life.

Then suddenly an occasion arose that made Mitter realise what a great
help Margaret might become to him. One of his agents had found out that
reports were reaching the authorities, of such a nature that they could
only be coming from someone inside Dunwich Hall, and Mitter knew at once
that the informer must be his butler.

So he appeared to take the girl into his confidence and disclosed to
her, in much the same way that the very plausible Mr. Worley had
explained to the innocent Tom Skelton, that he was a political agent,
and residing in England for the purpose of obtaining all information he
could that would be of service to his country.

No such word as spying was used, and he gave Margaret the impression
that his work was just the ordinary routine of international life, as
carried out among one another by all the European Powers, and if his
activities were of an unlawful nature, then it was only a case of tit
for tat, for of course Great Britain's had her agents, too, all over the
world.

"It's just a battle of wits, my dear," he smiled, "and if any of us get
caught"--he shrugged his shoulders--"then we are punished as political
offenders." He nodded. "We go to prison."

Then he told her that he believed the butler was being bribed to find
out all about him and suggested that with her greater opportunities,
whenever she could, she should get hold of Dempster's letters and bring
them to him, or failing that, make copies of them for him to read.

Margaret did not at all like the idea, but the first of the butler's
letters being obtained and steamed open, and she saw it was as her
master had thought, then her indignation at Dempster's treachery
overcame all her scruples, and from then on she was willing to do
anything Mitter wanted.

She now opened the studio door and entered.

"Well, little one," smiled Mitter, "are you glad to see me back?"

She nodded. "The house is very dull without you," she replied. "Dempster
has written two letters, but I could only get at one of them to open."
She smiled. "He wrote you had been very moody lately and hardly spoken
to anyone."

"Oh! he did, did he?" laughed Mitter softly. "That'll be exciting news
for them up at headquarters. Many people called?" he asked.

"Just a few, but Dempster said you were very busy painting, and he did
not like to disturb you." She drew out a paper from the bosom of her
dress. "I've got a list of them here," and then when Mitter was scanning
down the paper she went on. "I opened the door to some when Dempster was
off duty, and among them was Lieutenant Fortescue." She smiled. "He
would come in, for he said he had an important message for you, and if
he couldn't see you, must send it to you in writing. I got him some
paper and an envelope and he wrote it in the morning room. I put it on
your desk."

"Yes, yes," nodded Mitter, "I've read it, and it was only an excuse. He
suggests a round of golf with me when I've got the time to spare." He
frowned. "Of course, he only came in to have a talk with you. I've
noticed his eyes follow you about much too much, whenever he comes
here."

"He asked me to go with him to some pictures somewhere on Saturday,"
continued Margaret, looking very demure. "He says he'll meet me outside
the village in his car, if I write and tell him I can come."

Mitter's frown deepened, and for a few moments he paced restlessly up
and down before the fire. Then he said reluctantly. "And you'll go,
Margaret. It is my wish."

"What! Go out alone with him!" exclaimed the girl, very surprised. "You
mean it."

Mitter pushed her gently down into an armchair and balanced himself up
on the side. He stroked her hair softly. "Look here, dear," he said. "I
want you to cultivate that young man. I've just found out that his
cousin is Flight-Commander Fortescue, who is stationed in a Government
reserve in Carnarvonshire, where those wonderful invisible aeroplanes
are being assembled. He's one of the chief instructors there." He looked
intently at her. "Now you might get some information out of that young
man that should prove most valuable to me."

"Oh! but I wouldn't get Lieutenant Fortescue into any trouble for
anything!" exclaimed Margaret instantly. "He's a nice boy, and I rather
like him."

"Of course you do," returned Mitter quickly, "for besides being very
good looking, he's a gentleman and well bred. There's only that cousin
and a very old uncle to stand between him and a baronetcy." He went on
smilingly. "No, no, you won't get him into trouble, and if you find out
anything from him, it will never be known from whom it has come. You can
just draw him out tactfully and he won't realise he's told you anything.
You understand?"

For a long moment Margaret did not answer, and then she turned the
conversation and asked slowly. "Are you going to live here always, Herr
Mitter?"

He hesitated. "No-o, not always," he replied. "I shall go when my work
is done."

She looked up at him and spoke very firmly. "And will you take me with
you then." She nodded. "I should like to go."

Mitter frowned. "I can't promise you, Margaret," he replied, "for the
future is always very uncertain for me." He looked at her curiously.
"But why are you asking me that now?"

"Because"--she hesitated--"because the other day that Fortescue boy
started me thinking about a great many things, and I realised I was
living a very aimless life that seems to be going to end nowhere." She
laughed lightly. "You see, I am getting old, Herr Mitter, and I don't
want to be always a servant. I want to marry and have a home of my own
one day, and when I was talking to Mr. Fortescue I thought"--she blushed
prettily--"I thought I could very easily fall in love with him if I got
the opportunity." She drew herself up. "I know he likes me."

"But do you think he would marry you, Margaret?" asked Mitter with a
rather amused smile.

"Well, he certainly wouldn't get me in any other way," she replied
sharply. She thought for a moment. "Yes, I think he would. An instinct
tells me so." She nodded proudly. "I shouldn't be a disgrace to him,
anyhow, for as you've often told me, it's only by misfortune that I'm a
servant."

A long silence followed and then Mitter heaved a big sigh. "You are
quite right, my child," he said. "Make the most of your prettiness and
do the best you can for yourself. Go out with Mr. Fortescue and have a
good time." He spoke briskly. "Now, I tell you exactly what I want you
to get hold of for me. You're a clever girl, and if you go tactfully
about it, I'm sure this boy will tell you anything you ask."

Herr Mitter had another visitor that night, long after Margaret had left
him, and he sat brooding before the fire. He heard a muffled knock upon
one of the outside walls, and he rose hurriedly to his feet and shot to
the bolt of the study door. Then he went quickly to the big cupboard at
the far end of the studio, and unlocking it, with a key that he selected
from a bunch he took from his pocket, he swung to one side some
painters' coats that were hanging from ringed hooks along a rail. Then
he pulled forward a wide hinged board at the back of the cupboard and
disclosed an age-old oak door. The handle of the door turned, there was
a current of cold air, and a man stepped into the room. The two doors
were immediately closed.

The man was about Mitter's own age, but looked very boyish.

"Hullo, Carl," he exclaimed cheerily. "I heard you come back. Any news
of that doctor on Foulness?"

Mitter nodded. "The best, Bernhard," he replied. His face was all
smiles. "I found who he was without the slightest difficulty. He's a Dr.
Benjamin Howard Fergus, Professor of Physics at Cambridge University.
His home is in Cambridge, but he was taken away from his university
duties last February."

"Splendid!" exclaimed the other enthusiastically. "But tell me, how did
you get on his track?"

Mitter laughed. "Remember, I knew from our Manor Park friend that one of
his Christian names was Benjamin, and that his wife had recently had a
baby. So feeling sure that as a doctor of science he was considering
himself an important person I guessed a notice of the birth would be in
the London papers. And there I found it in 'The Times'--'On September
2nd. to the wife of Dr. Benjamin Howard Fergus, of Trumpinton road,
Cambridge--a son.'"

Bernhard rubbed his hands together delightedly. "So, how very often," he
exclaimed, "do our little petty vanities give us away! Go on."

"So I went down to Cambridge," continued Mitter, "and stayed there for
four days to make sure of everything." He laughed again. "I was
fortunate all along, for going to see where he lived, I saw an old
clergyman coming out of the house next door. I followed this clergyman
to a church where he was about to officiate, and sat through the
service. Then I enquired about him of the verger and learnt that he was
the rector of the church. So I said I wanted to speak to him, and being
taken into the vestry, asked permission to photograph a very beautiful
reredos they've got there. The old chap was delighted, and took me round
to examine the other things in his church Then I made a donation of 5,
and he at once invited me to his home for lunch."

"And you pumped him about his neighbor, of course?" suggested Bernhard
gleefully.

"Yes, over an excellent little lunch with some really good burgundy. I
admired the chrysanthemums next door, and he told me they were the pride
of this Dr. Fergus, whom he said was a very distinguished man. Then he
went on to tell me all about him; how the doctor, although still only in
the early thirties, had already made a name for himself in the
scientific world, how it was common knowledge he and his bosom friend,
Professor Carling, the professor of chemistry at the university, used to
spend nights and nights together in their joint laboratory, and,
finally, how Dr. Fergus had temporarily vacated his chair at the
university to take up research work, or what nature no one knew, in
London."

"Two of them, eh?" ejaculated Bernhard. "Then this Professor Carling
must be in the know, too."

"There's no doubt about it," nodded Mitter, "for the two are quite
inseparable."

"Then we needn't wait for this Dr. Fergus to come on leave again," said
Bernhard excitedly. "We can get hold of this friend at once, and wring
the secret from him."

"No, no," said Mitter quickly, "we must get them both together." He
lowered his voice and went on impressively. "Don't you see, if we get
hold of Dr. Fergus"--he hesitated and made a grimace--"and put pressure
on him to tell us of what the glass is made, how do we know he'll be
giving us the right formula? He may deceive us and we shan't be certain
we've got the real thing. But"--his face was very grim--"if we kidnap
them both, keep them apart from each other and get the secret from each
of them in turn, we shall be sure they are telling the truth if the two
formulas coincide." He shook his head. "How otherwise shall we know we
are not being cheated?"

"Hum!" remarked Bernhard thoughtfully, "you're right, but it doubles our
difficulties."

"No, not quite," returned Mitter quickly, "for being such inseparable
friends, we shall in all probability be able to lay hands upon them both
together."

"Then what are your plans?" asked Bernhard.

"I've thought it all over most carefully, and have been making a lot of
enquiries," replied Mitter. "I've found out golf is their only hobby,
and, with any luck, we ought to be able to get them on the golf course
itself. Their custom is to golf very early, starting about half-past
eight, and they caddy for themselves, probably because their
conversation is so private. Well, I've reconnoitred that golf course
most thoroughly, and the seventh green lies in a hollow and out of sight
from everywhere. Also, which is a very fortunate circumstance, it's only
about a couple of hundred yards from the Newmarket road. So we could
seize them there, and, our luck holding, we could bundle them in a car
and get away without a soul knowing what had happened."

"Where are we going to take them?" asked Bernhard at once.

"That also I am in the way of providing for," replied Mitter, "for I've
marked down a house on Scoulton Mere, about sixteen miles from Norwich
and six from Wotton. It's been vacant for about a year, is situated in
an isolated position, and is right on the bank of the mere"--he nodded
significantly--"a lonely stretch of water that would keep its secrets
well."

"And who's going to get these men?" asked Bernhard.

"Not you," replied Mitter promptly. "You'll have to keep out of it. I
shall carry it out myself, for I know the ground. I shall only need two
helpers, for neither the doctor or the professor are muscular men.
Fergus is tall and slight, I've seen his photograph, and Carling is a
small man. About the house, I shall get Wenham to arrange that. He looks
impressive and prosperous, and we'll pay a year's rent in advance, so
that no references will be needed."

"And how are you going to make this doctor and the professor speak?"

"If they are reasonable they'll come to no harm, and be allowed to go
after a time. If they are stubborn"--he shrugged his shoulders--"well,
we'll have to deal with them in a way they won't like." He frowned and
shook his head. "It may be an unpleasant business, but we can't afford
to be squeamish in a matter like this, and we'll have to get the formula
out of them in some way. If the worse comes to the worst, they'll never
be heard of again."

"But one thing," said Bernhard, "if you eventually let them go, they
mustn't be able to furnish any description of you afterwards." He looked
uneasy. "This affair will cause a hell of a sensation, and, remember,
you are under suspicion as it is."

Mitter laughed scornfully. "The description they'll furnish won't be
worth a tinker's damn. My get up, which in Cambridge was perfect, and
when I have my little talk with them I'll be looking a different man
again." He went on. "Oh, and another thing. The third day that Rector
took me to the County Club for a hand of bridge, and I learnt quite
accidentally that that young Fortescue who calls here so often has a
cousin, an air-commander in Carnarvon." He looked intently at his
companion. "I'm putting Margaret on to him. He's asked her to go to the
pictures on Saturday and she's going."

Bernhard opened his eyes very wide and spoke hesitatingly. "Is that
safe?" he began, and then he went on quickly. "But, of course, we can
trust her. She's a girl of firm character."

"Trust!" scoffed Mitter. "Yes, we can trust her. She'd never go back on
me."

Bernhard laughed. "Yes, it's funny; she'd go through fire and water for
you, who at heart have no liking for a pretty face, and yet for me, who
can appreciate one"--he made an expressive gesture of
disappointment--"she'd do nothing."

"Have you tried her?" suggested Mitter scornfully.

"No, and I'm not likely to, either. I'd only get a snub for my pains.
She'd not be easy for anyone to get over."

Mitter changed the conversation. "By the bye, yesterday, making a break
in my search for a suitable home, I took a day's shooting at Carmel
Abbey and there was introduced"--he smiled sardonically--"to three
important officials of the British Secret Service. They were Sir Robert
Carnaby, Colonel Bevan, and the inscrutable-looking Mr. Grant, head of
the counter-espionage here. They knew who I was, right enough, but
didn't dream I knew what their official positions were and it was vastly
amusing to watch them taking me in." He frowned. "But I rather regret I
went there now, for I happened to be in splendid form with my shooting,
and I'm inclined to imagine I made them think a bit. Another thing, too,
I didn't like. The three of them were going to stop the night at Carmel
Abbey and I don't want"--his frown deepened--"I don't want Larose to be
brought into our affairs."

"He's not likely to be," scoffed Bernhard, "and if he were, he'd not
find out anything where the shrewdest brains of the B.S.S. have failed."

"Oh, I don't know so much about that," disagreed Mitter, promptly "He's
not an ordinary man, by a long chalk, this Larose. He's a dreamer, if
you like. He's bursting with imagination, and yet he's eminently
practical when anything has got to be done." He shook his head
vigorously. "Yes, by Gad, if it came to a scrap with us, he'd ask no
quarter and would give us no points in ruthlessness. He'd stick at
nothing." He looked at his watch. "But come on now, Bernhard, you must
have a lot to tell me."




CHAPTER VII.--"A DUEL OF WITS"


At ten o'clock in the morning, just a week after the events recorded in
the last chapter, John Ebenezer Rook, proprietor of the Cow Inn in the
pretty little village of Battlebridge, was regarding with great
satisfaction the newly-painted sign over the inn door. The sign depicted
a very red cow, with long horns, and a very fierce expression. The
artist who had painted it had received ten shillings and two pots of
beer for his labor and that he had done his work well was the opinion of
both the landlord and his decidedly pretty-looking wife who was standing
beside him.

"That'll make them all sit up," nodded Rook decisively, "although I wish
he'd make her look as if she was going to give a bit more milk." He
nodded again. "Yes, we're going to make things hum here, and what with a
couple of good sows and plenty of fowls, I'll soon be a blooming farmer
as well as a publican."

"You're very wonderful, John," said his wife, looking up at him
admiringly, "and I still can't think how you've managed it. It's
perfectly lovely being here after living in that horrid little back
street in Southend!" Her eyes turned to the little river and the green
fields so near and she added with a sigh of great happiness, "The babies
will grow up strong and healthy too."

"Of course they will, Jinny," agreed her husband with a chuckle, "and
you'll be a different girl now as well. With good country air and plenty
of home-grown stuff to eat, you'll be so plump and rosey that when your
mum comes to stay with us, she probably won't know you." He patted one
of his trouser pockets, and healthy metallic sounds ensued.
"Twenty-eight and thrippence in the bar last night and what it'll be on
Saturday I don't know!" He took out a cheap watch, very shiney and very
new. "Oh! but I must be off now and collect those sows." He nodded to
his wife and turned away. "Mind, I shan't be long, not more than half an
hour, and if that insurance chap comes, just make him wait. Give him a
half pint and keep him talking until I come," and off he strode jauntily
up the road.

Not ten minutes later, a smart two-seater car drew up before the inn
door, and a pleasant-looking youngish man jumped out and made his way
into the bar. There was no one about, and he had to tap loudly upon the
counter before Mrs. Rook appeared.

"I'm sorry to have kept you waiting. I was----" she began, and then
noticing the well-dressed appearance of the caller, she broke off
suddenly and asked--"Oh! you come about Mary Belle insurance, do you?"

Larose, for it was he, half nodded and evaded the question. "But isn't
Mr. Rook in?" he asked, with what the girl thought was such a nice,
winning smile.

"No-o," she replied, "but he'll only be gone a little while. He went to
bring home some pigs we've just bought. Do please sit down and have
something to drink."

Larose at once complied, as it he were quite pleased with her
hospitality and then no customers arriving, he sat and talked for about
twenty minutes, until Scampy himself appeared.

"The gentleman from the insurance company," explained Mrs. Rook, and
Larose noticed Scampy's eyebrows came down and he gave him a hard look.

"Good morning!" said Scampy gruffly.

"Good morning! Mr. Rook," returned Larose politely. "Can I have a word
with you?" and Scampy, with a curt nod, led the way into a small parlor,
just off the bar. He pointed to a chair, and then very carefully closed
the door behind them.

"So, you represent the insurance company then?" he remarked, taking a
chair himself, so that there was now the breadth of a small table
between them.

"No," replied Larose, still speaking in most polite tones. "Your wife
suggested it and I didn't undeceive her. I've nothing to do with the
insurance people, and also"--his voice hardened just a little--"you'll
be pleased to learn I don't come from the police."

Scampy sat up with a jerk, frowned, and then shook his head
contemptuously. "That wouldn't worry me," he said sharply. "I've told
them all I know and have done with them." He shook his head again. "I've
nothing on my conscience."

Larose smiled grimly. "I'm not quite so sure about that, Mr. Rook," he
nodded, "or, rather, to put it plainly, I'm quite sure to the contrary."

But Scampy appeared quite at his ease and took out a cigarette. "Well
anyhow, who are you?" he asked after he had struck a match. "Another
blanky newspaper man, I suppose?"

"No, I've nothing to do with any newspaper," replied Larose. He looked
round to make sure the door was closed and added quietly--"I come from
the British Secret Service."

Scampy took the cigarette out of his mouth and with widely-opened eyes
made no attempt to hide his surprise.

"From the Secret Service!" he exclaimed. He blinked like an owl several
tunes and then looked contemptuously again. "Well, how the devil does
that concern me?"

"It concerns you so much," said Larose softly, "that if you don't give
me satisfactory replies to my questions"--he looked very stern--"then
it's good-bye for you to this pretty little inn, those two sows you've
just bought and all your prize fowls." He nodded. "It means a stretch
for you, my friend."

Scampy's wind-tanned face paled ever so little, but he put on a bold
front. "See here, Mister," he said scowlingly, "you'll not frighten me,
for I tell you straightaway that I'm as tough as hell." He laughed
scornfully. "Why, damn it all, I was in the police once and know you
want evidence to down a man."

"I was once in the police, too," smiled Larose very confidently, "and
I've got that evidence right enough. I was a C.I.D. man three years ago,
and my name is Gilbert Larose."

Scampy's eyebrows came together with a click. "Oh, that Larose chap, are
you?" he growled. He looked just a trifle uneasy. "I've heard of you, of
course. Pretty smart, but a bit too ready with your gun!" He spoke up
angrily. "Well, tell me straight what your idea is of what you've got
against me. Put your cards down, Boss, and don't beat about the bush."

"Good!" exclaimed Larose, "then we'll get to business at once." He leant
across the table until his face was as close to Scampy's as it could
get. "I've been six days, Mr. Rook," he said, "finding out all I could
about you and I assure you I've found out quite a lot. To begin with,
you've been lying heavily to the police. No, no, don't get into a rage
and don't shout, or you'll upset that nice little missus of yours." He
nodded. "If I find you reasonable it is quite possible she need know
nothing of what you've done. Now listen." He lowered his voice to the
merest whisper. "Do you know, my friend, what happened that night when
you were on the island?"

"Yes," grunted Scampy, "one of the passengers from my launch broke out
of the room where we had been locked and stole from the officers'
quarters."

"No," replied Larose quietly, "he didn't steal. He murdered! He killed a
sentry!"

"Gosh!" exclaimed Scampy, his face gone an ashen grey. "That old man!"

"He wasn't old," snapped Larose, "and none should know that better than
you. He'd only taken out his false teeth and made himself up." He shook
his finger menacingly in Scampy's face. "That fellow bribed you, Rook,
and you and he were working together, when that night you deliberately
wrecked the Mary Belle."

The color surged back instantly into Scampy's face. "That's a lie," he
snarled. "They are both lies. I didn't wreck the Mary Belle and I'd
never clapped eyes on the old man, until he leant over the pier head
that evening and called down he was coming for the cruise."

"You had never clapped eyes on him!" jeered Larose. "Why, you forget,
Rook, that you told everyone what a wonderful catch you'd got in that
Mr. Danker, a rich gentleman from the Royal Hotel who was paying you 4
a day for the hire of your launch and was bringing fine lunches of
sandwiches, pork pies and rum and beer!" He laughed scoffingly. "Never
clapped eyes on him, indeed! Why for three days, from 10 to 5, he was
sitting within 6 ft. of you all the time." He dropped his voice to quiet
tones again. "You are lying to me, sir, and you know it."

Scampy swallowed hard and his big chest heaved up and down in his
bewilderment.

"But he wasn't the old man!" he said hoarsely. "They were quite
different persons. The man who hired my launch was big and stout and
with a very dark skin."

"And wore glasses," went on Larose jeeringly, "so that people could not
see his eyes, and a wig of long hair!" He snapped his fingers together.
"You big ninny, if you are as innocent as you make out, can't you
realise his skin was dyed and he was all muffled in clothes and that big
ulster to make himself look stout. Oh! yes, I've got his description
from a dozen people in the pier. You talked so much about him and your
luck, that everyone was interested and took note of him."

Scampy made no comment. He was like a man in a dream, and his thoughts
were all confused.

Larose went on. "And for two of the days he hired your launch, you took
him bang opposite Foulness Island and anchored just off the South-East
Maplin Buoy." He looked incredulous. "Do you mean to tell me you weren't
spying out the shore and making all preparations for that night?"

"Spying out the shore!" exclaimed Scampy, now waking up and jeering in
his turn. "Why, I lived for years in Southend and know every yard of
that shore. I've gathered cockles for bait there, a hundred times!"

"And you still declare," went on Larose, "you had no knowledge the
tailor-man was that Mr. Danker?"

"I do," grunted Scampy, "and you've no evidence he was."

"Then if I acquit you of being, knowingly, a co-murderer with him that
night"--Larose spoke very sternly--"you have still to answer the charge
that you were bribed by one or other of them." He snapped his fingers
again. "Someone gave you money last week and there isn't the slightest
doubt what for."

"Prove it," grinned Scampy, his confidence having now all come back.

"A moonlight cruise of two hours for nine pence," laughed Larose. "Nine
shillings for your 12 passengers, and out of that you had to pay for
your oil and petrol, and give your assistant four bob. You made a lot of
profit, didn't you?" He sniffed contemptuously. "Great Scot! Captain
Rook, what jury would believe that?"

Scampy steadied his features to the most wooden expression he could
assume and made no reply. He did not feel quite so confident again.

Larose laughed a second time "Yes, and I've had a little talk with that
chap who sold you this pub. You've certainly primed him well what to
say, but he'll break down right enough in the witness box, and we'll get
out of him that you saw no earthly chance of raising any money when you
called here a fortnight ago."

"I didn't want to break into my savings," said Scampy suddenly. "I keep
my private affairs to myself."

"Good judgment," agreed Larose drily, "for they want keeping dark." He
appeared to remember something. "Oh! and another thing, my fine fellow,
I've been over on to the island and had a good look at that engine of
the Mary Belle." He seemed very amused. "You made a nice mess of that
magneto, didn't you?" His voice rose a little. "Filing the platinum
point until there was no platinum left! You, an experienced motor
mechanic, who's worked on the racing cars at Brooklands, using a big,
coarse file!" He whistled. "What'll the insurance people say when I tell
them that? Suppose I wait here for that agent of their's, whom your wife
said is coming here this morning!" He shook his head doubtfully. "A lot
of chance then you'd have of touching any of that 75, wouldn't you?" He
nodded. "Yes, I could make myself very disagreeable."

Scampy wiped the perspiration from his forehead with the sleeve of his
coat and looked out of the window. The sun was shining and he could see
the bright green fields outside. He could hear his wife singing their
little baby to sleep. The pleasant smell of beer and of the sawdust upon
the floor of the little bar came up into his nostrils. It was a little
Paradise they had come into, and now it seemed they were going to be
turned out. Verily he was in the toils! A dreadful fear gripped him, and
with all his courage, he had the look of a stricken animal, as he once
more faced Larose.

"What is it you want?" he asked hoarsely.

Larose suppressed the elation that he felt, for although the expression
upon Scampy's face was dark and menacing, he sensed undoubtedly that he
had at least in part, broken down the man's resistance.

He smiled. "To strike a bargain," he replied, "to hold my tongue and
leave you in peace, provided you give me certain information that I
want." He spoke quite friendly. "First, let's have another glass of that
good ale of yours, and you have one with me this time"--he smiled--"or a
tot of rum, if you'd prefer it, a good tot, like that Mr. Danker gave
you."

Scampy made no comment, but, leaving the parlor, returned in a few
moments with two pewter pots, and placing one before Larose, resumed his
seat. The expression upon his face was inscrutable.

Larose took a deep draught and then remarked casually: "By the bye,
talking about rum--did you sleep well that night when you were upon the
island?"

"Never woke up once," frowned Scampy, and in no wise replying in the
friendly tone of his interrogator.

"Of course you didn't," commented Larose, "for that rum old toothless
gave you all was doped. We found traces of veronal in the few drops left
in the flask, which, fortunately, had not been thrown away. You all
slept like dead men, and that young chap with the concertina actually
drowsed off again as he was being flown back to Southend in the
morning." He nodded. "I've had a talk with everyone of them."

"Well, what do you want?" asked Scampy sullenly. "Get down to business
as you said before."

"Well, the exact position is this, Mr. Rook," began Larose. "As I told
you I'm acting for the Secret Service, and I'm not interested two hoots
in what the police or the insurance people are doing. They can look
after themselves." He eyed Scampy intently. "All I want is to get upon
the trail of that Danker man, and if you make a clean breast of
everything to me, not only will I not pass on a single word of anything
to anybody, but also"--he took out his pocket-book--"I'll make you a
present of 50 down on the spot, cash down, at once."

Scampy's jaw dropped in amazement, his eyes opened very wide, and he
glared hard at Larose. He didn't speak for quite half a minute.

"And--if--I--tell--you," he said slowly, his voice strengthened, and
there was the ghost of a grin upon his face, "if I make up a yarn, how
do I know you won't blab? Where's my guarantee that you are on the
square with me?"

Larose made a scornful gesture. "Where are my witnesses?" he asked.
"What evidence could I adduce? You could deny everything! You've been in
the police and must know exactly what the position is."

Scampy nodded towards the little wad of notes that Larose had laid upon
the table. "Whose money is that?" he asked curtly.

"Mine," replied Larose. "I'm offering it to you myself."

"It's the Government's, you mean," said Scampy. "You'll have to account
for it to someone. You'll have to tell that you gave it to me, and then
there'll be another one in the know."

"Certainly not," replied Larose. "I tell you I'm all on my own." He
shook his head. "I'm a well-to-do man, and I'm doing this for the sport.
I want to succeed where others have failed. Great Scott!" he went on
impressively, "do you think any department in the Government would send
me down to compound a felony, for that's what I'm offering to do." He
looked contemptuous. "Here are you--a man who deliberately threw away
his boat and callously exposed twelve persons to the danger of losing
their lives, a man who accepted a bribe to betray his country, a----"

"No, no, Mister," broke in Scampy sharply. "I didn't do either. Go a bit
easier, please. I was bluffed, if you must have it. I was sucked in"--an
angry light blazed up into his eyes--"and that's what makes me half
inclined"--he hesitated, and then grinned again--"to spin you that
yarn." He nodded grimly. "No man's going to take down J. E. Rook and get
away with it. So there."

"I should say not," laughed Larose, "so let's have the tale."

But Scampy hesitated. He moistened his lips, he frowned and he swallowed
many times.

"Come on," urged Larose gently. "I'm your friend or your enemy, and
remember"--he held up a finger warningly--"that insurance man may be
along any moment now." He pointed to the notes upon the table. "And in
addition to those, if I lay the man by the heels, I promise you I'll put
down another fifty."

Scampy hesitated no longer. "All right," he said, "I'll tell you
everything. I'll have to trust you, but I see you're a chap something
like myself. Maybe you're not too particular sometimes, but you'll keep
your word when you've sworn anything." He looked uncomfortable. "Not
that that Danker man wasn't pretty good in his way. I got the second
half of what he promised me, by the post next day. Still"--he swore a
deep oath--"I'm no traitor whatever I am. I lost three brothers in the
Great War and I don't forget it. So here goes."

And then he proceeded to tell Larose everything, and as he warmed up, he
told his story in a sheepish but unhaltering way, that convinced his
hearer he was speaking the absolute truth.

He told of his approach by Mr. Danker, of the long conversations they
had had, of the bet that was supposed to have been made, of the money he
had been paid and all that happened afterwards.

"So, I didn't pile up my boat," he said. "It was just by chance that
that darned wind sprang up when it did. I just meant that the Mary Belle
should drift on to the sand and there would have been no danger for any
one. As it was, I admit, I was scared stiff, and we were devilish lucky
to escape as we did."

When his tale was over, the delighted Larose proceeded to question him
briskly, and drew out of him many personal little details about this Mr.
Danker that Scampy had not thought worth mentioning; how the former had
always brought a bottle of milk for himself, how he had munched
chocolate like a school girl, and was never without a thick blue-paper
covered slab in his pocket; how he smoked strong cigars, much too strong
for Scampy who had been given one, how he made little jokes and laughed
over them himself--"Ah!" exclaimed Scampy, sharply here, "now I remember
something that makes me think you are darned right. Both Danker and that
old toothless man bent their heads forward in the same way when they
were mused. Yes, yes, I'm sure of it." He nodded violently. "Gosh! what
a baby I've been!"

"It was that rum that made me first think they were the same man,"
smiled Larose. "That Danker chap, with his dark glasses, his rug, his
cushion, and his luncheon basket was a bit of a conspicuous figure, and
I soon traced him to where he used to buy the beer. Three days in
succession he bought two bottles and a gill of rum at the Kings Hotel,
and then, the last evening, after he had come off the pier, he called in
and bought a pint flask of the spirit, evidently to take it home and
doctor it up, in case any occasion should crop up when he wanted to put
anyone to sleep. I also found out----"

"Oh! Oh!" interrupted Scampy excitedly. "I remember something now that
will please you. I've got a cloak-room ticket that he dropped the last
day he came in my launch. I'd forgotten all about it. I found it after
he had gone." He began fumbling in his pockets, and then after a few
moments, he stopped and his face took on a very worried expression.

"Oh! don't say you lost it!" almost wailed Larose. "It will probably be
worth that extra 50 to you!"

Suddenly Scampy looked relieved. "I know where it is," he said. "It'll
be in my navy coat pocket," and in less than a minute Larose was in
possession of the precious paper.

"Excellent!" he nodded delightedly. "This may be a great help to me. My
conscience, but if I catch this J. Reynolds calling for his bag!"

The door opened and Mrs. Rook appeared. She looked rather bewildered.
"John," she said haltingly, "there's another gentleman here, and he says
he comes from the insurance company, too!" Her eyes fell upon the notes
on the table and she opened her mouth very wide.

"Oh! that's all right!" exclaimed Scampy heartily. "He's the right man."
He nodded towards Larose and looked very pleased. "This gentleman comes
from a London newspaper, and they are giving me 50 for my story of the
wreck. I've just been telling him all about it," and he picked up the
notes, and folding them methodically, put them in his pocket.

"Here, I say," said Larose with a frown, directly Mrs. Rook had left the
room, "you were pretty ready with your explanation then, weren't you?
You must have a jolly good imagination!" He looked troubled. "I hope to
goodness that all you have been telling me is the truth!"

"Quite, governor," laughed Scampy, "I've added nothing and left out
nothing that I can remember." He bent over the table. "My wife's the
best of girls and the apple of my eye, but it never does to tell a woman
too much, for they're weak creatures." He looked very knowing. "If she
hadn't been a bit that way, Jinny would never have married a rough,
coarse chap like me." He nodded. "She thinks I'm Christmas!"

"Well, one thing more," smiled Larose, apparently quite reassured. He
took a well-folded sheet of the 'Sphere' out of his breast pocket and
laid it flat upon the table. "Now tell me if any of those men there look
like Danker or that toothless man."

"Greyhounds!" remarked Scampy as he bent over it. "A coursing meeting,
eh!" He studied the photograph carefully and then shook his head.
"Sorry, Boss," he said, "but I don't think so. You see, if that Danker
man was in a disguise, as you say, then I'd never be able to recognise
him again. As for old toothless--why old toothless looked sixty and much
older than anyone there."

And that was the only disappointing part of the morning to Larose, for
among the men in the photograph was Carl Mitter, of Dunwich Hall.




CHAPTER VIII.--HOT UPON THE TRAIL


That same night Larose was sitting in an upper room of a small house in
Pimlico. The house belonged to a policeman whom he had known in his
detective days, and he was making it his headquarters whilst pursuing
his enquiries as to the identity of the J. Reynolds, who, nearly three
weeks previously, had deposited a bag in the cloak-room of Liverpool
street station.

In company with a detective, whom he had borrowed from Scotland Yard, he
had called at the cloak-room that afternoon, but beyond taking
possession of the bag that had not been called for, he had not obtained
much to help him.

The cloak-room attendants had not any recollection of the individual who
had deposited the bag with them, and that was easily understood,
considering the great number of parcels, packages and bags, &c., that
were left there every day.

Larose had brought the bag away, arguing that the mysterious Mr. Danker,
not knowing where he had dropped the ticket, would not dare to run the
risk of calling for his property, and arguing, too, that if he had been
intending to claim it, then he would have done so days and days ago, and
not allowed so long a time to pass by. As a precaution, however,
instructions had been left with the head clerk of the cloak-room that
if, by any chance, any person should come about the bag and state he had
lost the ticket, then he was to be held in conversation while one of the
railway policemen was being summoned to detain him until Scotland Yard
had been communicated with.

But Larose was building no hopes there. "This man is wanted for
something much too serious," he told the cloak-room officials, "and it
is any odds against his turning up."

So now he had the bag and its contents spread out before him and, with
his life's training in the picking up of clues, was endeavoring to
determine from them the apparent occupation and habits of their owner.

"And where he lives," he grinned. "Where's his hiding place in London,
and where he's been carrying this bag to and fro."

He enumerated the articles before him. "A bag, a cap, a coat, and from
the pockets of the coat, a key, a portion of a slab of Fry's Mexican
chocolate, and some glycerine lozenges in a packet labelled Westbury,
Chemist, Bromfield street. Hum! not much to go upon, but still things
might be worse!"

He scrutinised the bag closely, examining it from every angle. "A good
class bag, not a cheap one, and therefore I may presume its purchaser
was not a needy man. Undoubtedly, its greater service to its owner has
not been upon rail or motor car journeys, because it has been carried so
much in the hand. The under-surface of the handle is smooth and shiny,
and besides, I can see most plainly where the side of the bag has been
continually rubbing against his clothes as he has walked along. He is a
right-handed man, and has been carrying it about with him for quite a
considerable time."

He examined the outside of the bag with a big magnifying glass and went
on. "It has been deposited in cloak rooms scores and scores of times, as
evidenced by the paste marks and still adhering edges of many torn-off
dockets. I can count 27 of these edges, distinctly, and they are of
varying degrees of age, from quite recently to long ago. From the
swatches on the plate, the lock has had the key turned in many times."

He summed up as far as his thoughts had led him. "Yes, some man has been
carrying this bag about very often, and if the hour he deposited it in
the cloak-room this last time is any indication of his daily routine,
then he is not in the habit of taking it with him to the place where he
sleeps. The number upon the docket showed it was issued quite late in
the day, upon that Tuesday, September 17, with 704 dockets before it,
and only 47 to follow."

He nodded. "So, I will assume his general custom was to deposit it in
some cloak room when his days work in the city was done and, taking a
long shot, I should guess this coat and cap were changed in some toilet
convenience for something more suited for the place where he actually
lives. This coat was surely his working coat, and both it and the cap
were in accordance with the nature of the work he was engaged upon
during the day."

He went on. "Now for the coat itself. Ready-made, but of good quality,
indicating once more that the man was not poor. Lining of ticket pocket
quite clean, with its flap still almost straight. That means that he
apparently did not use the ticket pocket at all, and therefore that he
did not have to take a bus, or tram or another train from Liverpool
street, to finish his daily journey suggesting, of course, that his work
lay not far away. Lining of side pockets pretty clean, and that shows
that they were not used much. But lining of breast pocket is shiny and
was therefore used much more. It bulges quite a lot, too." He sniffed
hard. "Yes, it smells strongly of cigars and so he undoubtedly carried a
cigar case there, as well, perhaps, as a wallet."

He sniffed again. "No, that coat does not smell of cigars, and therefore
its owner smoked his cigars at either or both ends of his journeys to
and from the cloak room, and when he was wearing a different garment."
He thought for a moment. "That's interesting, for this coat, then,
undoubtedly the property of that man Danker, an inveterate cigar smoker,
can hardly have been worn at all except upon these daily journeys.
Therefore, it is most probably a link between two personalities, the
personality in which he arrives at some cloak room to claim his bag in
the morning, and the personality he assumes at the other end of his
short journey, when he starts upon his day's work. That he was not
remembered an Liverpool street station is of small moment, for he may
not go to the same cloak-room every time. There are plenty of other
railway stations close near. Broad street, Moorgate street, and the
stations on the Underground and the Tube."

He continued. "Now for the key, a Yale lock one, with its number filed
away, and filed away so deeply that no chemicals or enlarged photo shall
by any chance bring up the imprint of the figures of its number. That
alone is suspicious and proves the man is upon some shady business, and
did not intend, if he lost it, that the particular lock it fits should
be traced by the records kept by the Yale Lock Company. The key is a
front-door key, or rather, seeing that it is used in the City, it
probably opens the door of some office or room in some building."

"Now for the glycerine lozenges bought at the chemist's in Bromfield
street! They may certainly furnish some idea as to the direction in
which he is accustomed to go after leaving Liverpool street. Then this
packet of chocolate may indeed be of greater help, for as an habitual
consumer of chocolate, it is quite possible he may occasionally purchase
his packets at the same place, and so, perhaps, in some sweet-shop in
the neighborhood of Bromfield street, someone may remember a customer
who comes in, carrying this bag, and wearing a cap like this."

He nodded again. "Yes, with any luck that's how I'll pick him up to
begin with. So, to-morrow I'll go the round of all the sweet shops,
wearing this cap and carrying this bag. Unhappily I cannot wear the
coat, too, because it is too big, and would make me look conspicuous."

He leant back in his chair and shut his eyes tightly. "Now let me think.
Let me start off quite clear." He spoke very slowly. "Now if I knew
nothing of what had gone before, what should I take the owner of the bag
and coat and cap to be? A commercial traveller, undoubtedly, and one who
tramps round and round in some one particular district! As I say, he has
carried the bag about quite a lot, and not using his ticket pocket, then
he has apparently not boarded trains or buses whilst doing so."

He screwed up his face. "But he has not carried many samples or articles
in the bag, for its lining is very clean and its sides have never been
distorted and bulged out of shape." He sat up in his chair with a jerk
and opened his eyes very wide. "Then what the devil does he travel in?
Ah! but another thing--a commercial traveller would not be going about
in a cap and a coat like this. He would be making himself look much
smarter." He shook his head. "No, I should undoubtedly be wrong there.
He is not a commercial traveller, and for the same reason he is not a
clerk in an office. His occupation is a lowly one, but at the same time
it is one that does not involve dirty work, for the sleeves of his coat,
about the wrists, are not soiled or greasy, in any way." He shook his
head again. "I give it up for the present."

His eyes brightened. "Now comes another problem. This man Danker, this
toothless old man, this J. Reynolds with the bag cannot be Mitter, for
the butler has informed the Secret Service people most positively that
Mitter was not absent from Dunwich when Scampy was making history with
the Mary Belle, and yet"--he screwed up his face again and spoke most
emphatically--"after all I've heard about Mitter from Mr. Grant, and
after finding out that Mitter is the son of that Mangans, the spy, and
knowing Mitter as I do myself, I'd swear it was Mitter himself who was
on that Foulness job."

He shook his head frowningly. "Yes, the very audacity of it would be
just like Mitter! A man of his known nationality; openly and boldly
making friends among the Service, as he does, and talking affably and
easily the other day to Sir Hubert Carnarby and Colonel Bevan, when he
must have been quite aware from the spying he is doing, that they are in
the Intelligence Department!" He chuckled with some amusement. "Perhaps,
too, he even knew who Mr. Grant was, for a man of Mitter's capacity
would find out a great deal, and most certainly not be the innocent the
British Secret Service have believed him to be."

His thoughts ran on. "Besides, Mitter smokes strong cigars, just as that
Danker did, and I make out from the descriptions given by Rook, Colonel
Maitland and that sergeant on Foulness, that the build of that toothless
old man was exactly that of Mitter when you square the shoulders and
take out the slouch. Another thing, too. Scampy said Danker, whoever he
was, was no common and uneducated man, but had the bearing and manners
of a gentleman. And Scampy should know a gentleman when he sees one, for
when in the Force he was attached to the Marlborough street police
station." He thought for a moment. "And Mitter's gentlemanly bearing is
the first thing that impresses everyone when they are introduced to
him."

He looked very troubled. "Yes, that butler's testimony is the snag that
worries me, and I'll have to have a talk with him as soon as it can be
arranged. He certainly doesn't look intelligent enough to be
double-crossing us, but I must give him a good look over, with that
possibility in my mind."

He thought on for a long time and then heaved a big sigh. "But it's bed
now, Gilbert, and then to-morrow you'll go tramping all round Bromfield
street, buying lollipops or chocolate at every sweet shop you go into."

So, the following morning saw Larose alight from a bus at Liverpool
street station, wearing the cap of J. Reynolds and carrying the latter's
bag. This time he was accompanied by no detective from the Yard, for he
was intending to rely upon what he considered a much more powerful ally,
a crisp 5 note for anyone who could furnish him with the information he
wanted.

He looked in at Westburys the chemist's, but the proprietor and three
assistants there only smiled and looked very amused at his enquiry. They
had no habitual purchaser of glycerine lozenges, and remembered no
individual with that particular cap and bag.

Then he began the round of all the shops selling Mexican chocolate, and
although many pairs of eyes gleamed when the 5 note was produced and
promised, he got no satisfaction from anyone, and lunchtime found him
partaking of a grilled chop in the refreshment room of Moorgate Street
Station, in a very dispirited frame of mind.

"You've now twenty-nine packets of Mexican chocolate in this bag, my
boy," he grinned, "and by nightfall it will probably run into a hundred.
The family will be kept in chocolate for a year."

But as it turned out he was quite mistaken there, for at the very first
shop he went into, when the luncheon rush was over, he got upon the
trail of the man he wanted at once.

The shop he entered was a very small refreshment one in Fore street,
just round a corner and to the side of the entrance to a big building of
many offices. It consisted only of two small rooms and a cellar, and
sold ginger beer and lemonade, sandwiches, cakes, oranges, and a general
assortment of confectionery. It was kept by two sisters, middle-aged
spinsters, very obliging and very intelligent-looking. They were alone
together in the shop when Larose went in.

Yes, they had one particular customer, they said, who occasionally came
in to buy Mexican chocolate, and they remembered him because he always
bought five one shilling packets at a time. No, he did not come
regularly, and, indeed, had not been in for some time now. Still, he
might come again any day. When he called, it was generally early in the
day, about ten o'clock. Yes, he carried a bag like that, and wore the
same kind of cap, pulled down low upon his forehead. He always had
gloves on, and wore dark spectacles. He was clean-shaven, of medium
height, and looked about forty. He was a very nice man to speak to, and
always very polite. No, he did not look a clerk, besides a clerk would
have to get to his work before ten o'clock. They really did not know
what his work might be, but he was certainly not a working man. He had a
superior air about him.

Larose at once proceeded to produce the page of the 'Sphere' that he had
shown to Scampy, and asked the sisters if they could pick out, in the
photograph taken at the Brandon coursing meeting, anyone at all like
their chocolate customer.

The sisters stared hard, and then one of them said hesitatingly: "He
might be several of those gentlemen, but, of course, they're all much
better dressed," and as before when he had shown the photograph to
Scampy, Larose felt very disappointed.

He look out a 5 note and handed it across the counter. "Now, here's
five pounds to begin with," he said impressively, "and if, when that man
comes in again, one of you follow him and find out where he goes, it'll
mean at least 20 to you, for I want to get his address very badly."

The sisters looked rather frightened. "But what's it all about, sir?"
asked the elder of them with a catch in her voice. "We don't want to be
mixed up in any case in the police court."

"And you won't be," laughed Larose merrily, at all costs not wishing to
upset them. "I tell you honestly I've nothing whatever to do with the
police, for I'm only a private detective, and if you find out where he
goes, your names will never come out."

"But what's the poor fellow done?" asked the other sister. "He looks
such a nice man to us."

Larose fibbed boldly. "He's not a nice man," he said sharply. "He's
married to a very pretty young girl and the poor thing's just got a
baby, but he's left her to go off with someone else." His voice took on
an indignant tone. "He's got a bit of money, but he's left her quite
destitute."

Indignation, too, thereupon at once seized the sisters, and the
expression upon their faces changed from fear to disgust.

"Then I hope you get him and make him pay for it," said the one whom her
sister had addressed as Hetty. "Some men," she added, "are horrid
creatures, and we're always glad we never married."

A few minutes later Larose bade them good-bye, after receiving from them
the solemn assurance that one of them would certainly follow their
customer the next time he came in and then immediately telephone up a
message to the number he, Larose, had given in Pimlico.

"You can depend upon us," said Miss Hetty in parting. "We've got all our
wits about us, and the 20 will be a perfect God-send, for trade,
lately, has not been very good."

Larose was very satisfied with the way things were shaping. "Things
couldn't be going better," he told himself that night, as he was
treating himself to a nice little dinner at the Savoy, "and I'll run
that chap to earth, sure enough." His face clouded. "But it may be a
long wait, and I'll have to kick up my heels here doing nothing and just
marking time. I'll have to wait in every morning, too, until well after
half-past ten, and never, indeed, be far from a phone at any hour of the
day." He shook his head. "But patience, Gilbert, patience! You've had to
go slowly many a time before."

Happily, however, for Larose's restless nature, he had not to wait very
long, for upon the third morning, exactly at ten o'clock, the
long-hoped-for message came through on the phone.

It was the sister, Hetty, speaking, and she said the man had called in
at the shop not ten minutes previously. She had followed him and seen
him go into Moon Buildings, upon Finsbury Pavement!

Instantly Larose became all activity, and, much less than an hour later,
made up as an old gentleman, was interviewing the two sisters in their
little shop in Fore street.

The man had looked very much as he had done before, they said; was
wearing a cap of similar type, and was carrying a bag of about the same
size as the one before. The bag now, however, was a new one.

"But we can't be certain, sir," said Hetty finally, "that he's like any
of the gentlemen in the photograph you showed us. He's something like
their style, but I am sure I should never pick him out of that group if
someone didn't suggest I might find him there."

"Never mind about that," said Larose cheerfully. "But tell me, now, did
he go into the building as if it were his habit to do so? I mean, did he
walk in without any hesitation?"

"Oh, yes," was the reply. "He went straight in, and I saw him nod a sort
of good-morning to some man in uniform who was standing just inside the
entrance."

"That's splendid," said Larose. He frowned. "But you don't think he saw
you were following him?"

Hetty shook her head. "No, I'm sure he didn't. He never looked round
once, and he walked quickly as if he were in a hurry."

Larose handed over four 5 notes to the delighted sisters, with the
remark, however, that he might still, perhaps, be wanting their help.

"It all depends upon whether I am able to recognise him," he said. "If I
can't, then I'll have to get one of you to come and wait somewhere near
the entrance one morning, and pick him out for me."

His next move was to pay a visit to Moon Buildings, and he walked in
confidently as if he had some business with one of the tenants and knew
exactly where to go. He passed a big brass frame, with its scores of
numbers and names, with just a slight side-glance and took no notice of
the attendant who was standing by his open lift.

"Hm!" he remarked thoughtfully, "that's probably the chap he nodded to,
and if I only dared to risk it, the whole business would be a very
simple one." He shook his head. "But no, I must find out first what sort
of fellow this lift-man is. A man like Mitter, or indeed any man engaged
upon the same kind of work that he is, would be suspicious of everyone,
and if I now go asking questions of this fellow, however high I may
bribe him, his face may give him away at once, the next time my fine
gentleman sees him."

He traversed the whole length of the passages upon the ground floor,
noticing with some annoyance, the other entrance into the building. Then
he walked up the staircase and along every floor scrutinising all the
names upon the office doors. Finally, he descended from the sixth floor,
in the lift along with some other passengers and left the building by
the Fore street entrance.

He next proceeded to the refreshment room in Moorgate street station,
and over a large cup of black coffee and many cigarettes considered what
he must next do.

"No, I can't go nap on that lift-man," he told himself. "He's too
curious and too chatty and, as I was afraid, would give the show away at
once. It wants a man with a poker face for this job."

He thought for a while. "And I can't spring the trap yet, for I may find
I've got only a very small mouse in it or even none at all. I must see
this man for myself first and find out, too, what is his ostensible
occupation here." He shook his head vexatiously. "He can't possibly be
Mitter after what that butler says, which is a deuced nasty fly in my
poor little pot of ointment. He may not even be J. Reynolds, Danker, or
that toothless man. He may be quite a different person altogether, and
then--" he sniffed scornfully--"shouldn't I be done?"

He went on. "Besides, who's going to identify J. Reynolds. There's no
one to identify him." He nodded.

"Yes I must go slowly, and carry on on my own. I must trail that
chocolate man when he goes home tonight." He looked uneasy. "But shall I
recognise him? That's the difficulty. There are plenty of men with caps
and bags and he may not even carry his bag tonight. Again, he may leave
the building by the other entrance, or, Great Scott!" his face fell--"he
may even have gone off by now!"

He lit another cigarette and reviewed everything calmly. "Now the
position is this. The Secret Service people know for certain that Mitter
is spying over here on behalf of his country, and they are of opinion
now that the work carried on from Dunwich Hall is only a blind. They
think his real work is being done from another place. Well, connecting
Mitter with that Southend newspaper, connecting that newspaper with
Danker's exploits on Foulness, and Danker with J Reynolds, and J.
Reynolds with Moon Buildings--I think I've found the place. Good! Then
the job is to connect J. Reynolds with Mitter and the circle is
complete. I'll set about it at once in a practical, commonsense way,
taking no risks of frightening anybody by injudicious enquiries that
might possibly come to their ears and cause them to bolt away."

Larose was a quick worker, and once having made up his mind about
anything, he never allowed the grass to grow under his feet. So after
having hung about the entrance to Moon Buildings until well after five
o'clock, and failing altogether to pick out anyone leaving there who
looked at all like Carl Mitter, he at once proceeded to take more
practical and energetic measures.

He went into a building almost opposite, and after some persuasion and
the offer of a stiff rental, paid in advance, secured the use of one of
the rooms of a typewriting bureau for a fortnight. The room was upon the
fourth floor, and its window faced the street. He told the proprietor of
the bureau, quite frankly, that he was a private detective and wanted to
obtain a photograph of certain parties who would probably be passing in
the street below in the course of the next few days.

So the following morning, at half past nine, found him installed in the
room, in company with an expert photographer, with a large camera fitted
with a telescopic lens, and Miss Hetty from the sweet-shop. The three of
them were occupying chairs close to the window, and Larose and the woman
were provided with powerful glasses.

Miss Hetty was all in a twitter of excitement, and, now embarked upon
the adventure, enjoying herself immensely. She was sure, she declared,
she would be able to pick out their customer at once, whether he carried
a bag or not.

But no good fortune came to them that day, although several times Miss
Hetty started from her chair, thinking that the great moment had at last
arrived, only, however, to sink back again, disappointedly, declaring
herself to be mistaken.

"Never mind," said Larose cheerfully, when at half-past five they all
prepared to go their different ways, "we may have better luck to-morrow.
Perhaps he doesn't come up to business every day." He laughed. "Besides,
the longer he takes to put in an appearance, the more you will both have
to be paid."

The next morning they were all together again, just before half-past
nine, and they had something to interest them at once, for a telephone
mechanic, swung in a slender cradle, began to pull himself along one
single strand of wire, suspended high above the street. Everybody
passing along was interested, too, and all heads were turned up to watch
his seemingly perilous journey.

"But keep your eyes on the pavement, please," cried Larose sternly,
"for, remember, this is the most likely time for our man to appear."

And it was well he had warned them, for not half a minute later Hetty
jumped up excitedly, calling out. "There he is, just by that red motor
car. Look, that man carrying the bag. Quick, he's stopped and is staring
almost right up at us."

But there was no hurry, for the man's gaze was fixed intently upon the
mechanic in the cradle, and the photographer was enabled to make three
good exposures, before he turned away his face and proceeded up the
street. Then the excited watchers saw him go straight into Moon
Buildings.

"Are you sure that was the right one?" asked Larose sharply,
disappointed that with his dark glasses and the cap pulled down low upon
his forehead the man had not appeared to bear much resemblance to
Mitter. Added to that, the man had not seemed to be quite so tall.

"Quite sure," replied Hetty, struggling to get back the breath that had
all left her in her emotion. "There's no possibility I can have made a
mistake."

"Then you remain here on the watch," said Larose briskly, "so that we
can be sure he's not come out again. We'll be back again in less than an
hour," and he rushed off with the photographer to get the plates
developed.

But good fortune was no longer smiling upon Larose, for returning well
within the specified time of one hour, Miss Hetty, almost with tears in
her eyes, informed him that the man had come out of Moon Building again,
not ten minutes after they had gone away.

"It doesn't matter," smiled Larose, apparently in no wise disappointed.
"We can't have it all our own way and, at any rate, we know that our
friend continues to come here and that's the main thing. It will be only
a matter of days now before I have my little talk with him."

That night Larose was sitting again in his lodgings in Pimlico, holding
in his hand one of the photographs taken that morning.

"It's disappointing," he frowned, "but the idea is not so unlikely that
I can give it up altogether. It's got Mitter's chin and he's holding
himself as Mitter does, but the nose and the mouth and the general shape
of the face are quite different." He scowled. "The deuce take those
glasses! If only I could see his eyes!" He shook his head. "And another
snag. Mr. Grant is positive that if Mitter were away from home today the
butler would have rung up Saxmundham, and yet no call has come through.
He says the butler has never failed them in that respect." He shook his
head again. "It's puzzling and I can't understand it."

He returned the photo to it's envelope and put it in his pocket. "Well,
I'll carry on on my own for the present," he continued, "but the darned
trouble is I can't go up and speak to him, for if he's Mitter, at close
quarters, he'll see through my disguise at once."

The next morning, still made up as a prim old gentleman, he lounged
about in the vicinity of Moon Building and then, suddenly, things began
to happen very quickly, for without a moment's warning he came almost
face to face with the man he wanted. The latter was walking briskly
along looking neither to the right or left, and carrying the
incriminating bag with him.

Larose, daring to bestow upon him only one lightning glance, followed
cautiously after him and then when the man turned into the entrance of
Moon Buildings, he quickened his pace so that he was almost upon the
heels of his quarry, as the latter entered the main corridor.

He saw him turn his head and without stopping, nod good-morning to the
lift-man, but then before he could see whether the man continued up the
corridor or took to the stairs, he was violently bumped into by a
hurrying messenger boy and thrown completely off his feet. He sprawled
to the floor with all the wind knocked out of him.

For the moment he was quite dazed, but the lift-man ran up and helped
him to his feet.

"Just like those darned boys, sir," he exclaimed viciously, "for they
never look where they're going!" He began to brush down Larose's
trousers with his hand. "I hope you are not hurt, sir."

"No-o," gasped Larose, beginning to get back his breath, but in a fury
of mortification, for he could now see no sign of the man he had been
following. "I'm-quite-all-right-thank you. It was Mr."--he glanced up at
the frame upon me wall and took the first name that caught his eye--"it
was Mr. Staines I was running after. That was the gentleman who just
said good morning to you, wasn't it?"

"No that wasn't Mr. Staines," replied the lift-man. "That was Dr.
Smith's man. Do you want him?"

"No, no!" exclaimed Larose hurriedly. "It was Mr. Staines I wanted. I
thought it was he."

"Well, I'll take you up in the lift to Mr. Staines's, sir," said the
lift-man. "His rooms are on the fifth floor, and it's a long way to walk
up."

So in a few seconds Larose was ascending quickly to the floor where this
Mr. Staines, whoever he was, carried on his business. The lift-man was
disposed to be very chatty.

"Good reliable man, Mr. Staines, sir," he remarked. "Even one speaks
well of him, and he does a good business. Here we are, and that's his
office right opposite. Harry, Harry," he called out sharply as the lift
stopped, and he caught sight of a young fellow through an open doorway.
"There's a gent wants to see the boss." He stood aside for Larose to
walk out of the lift. "This young chap will attend to you, sir."

Larose cursed under his breath. He had not the remotest idea what excuse
he could give, and yet, without exciting suspicion, he could not now
decline to enter the office. Then to his great relief he caught sight of
a small brass plate upon the wall near the office door. 'George Staines,
Patent Agent,' he read, and he grinned to himself at the thought of the
farce he would now have to play.

The clerk motioned to a chair. "Mr. Staines is engaged at the present
moment, sir," he said, "but I don't think he will be long," and Larose
was quite pleased, for it would give him time, he thought, to imagine
some kind of invention, about which he wanted to know the cost of taking
out a patent.

But he was not by any means pleased when the minutes ran into half an
hour, and he could still hear the hum of voices in an adjoining room.
Then, the time extended to three-quarters of an hour, and in the end
nearly a whole hour went by before he was finally ushered into the
presence of Mr. Staines.

He apologised for taking up Mr. Staines's time he then explained, and
said he had thought of an idea for a new kind of corkscrew, and wanted
Mr. Staines to inform him how to set about getting it patented.
Thereupon, the obliging Mr. Staines proceeded to go fully into details,
and it was quite another quarter of an hour before Larose could get
away, with the promise made of calling again another day.

"I'll send him a postal note for a guinea," he told himself as refusing
the offer of the clerk to have the lift rung up he proceeded to make his
way down the stairs. "It's a shame to have taken up his time for
nothing."

Remembering then that the man he was after had not taken the lift when
coming into the building, he was sure that Dr. Smith's consulting room
would not be very far from the ground floor, and with no very clear idea
in his mind as to what exactly he was going to do when he found it, he
commenced his search upon the lower floors.

Then with his heart palpitating a little he had just caught sight of
'Dr. Smith. Diseases of the Skin' upon a brass plate upon a door
numbered nine, at the end of the passage on the first floor, when he
heard a loud voice, the door itself opened, and a stout man with a red
and blotchy face came bustling out.

"Good-bye, then Doctor," called out the stout man. "I'll try it for
another month," and Larose heard a hoarse voice say in return,
"Good-bye, Mr. Jennings," and was just in time to catch a fleeting
glimpse of the dark-spectacled and well-bearded face of a white-gowned
man, inside the room, as he passed the doorway.

"Ho! ho! then I've seen Dr. Smith," he chortled, "and so at any rate
I've not had all my trouble for nothing."

Walking very slowly, he allowed Dr. Smith's patient to go past him, and
then, an idea seizing him, he followed the stout man into the street.

"Now if by any lucky chance I could get a word with this gentleman," he
went on, "I might learn something of this doctor's habits and be able to
get into his rooms when he and his man are away. He's got four rooms, I
see, and this key I've got will almost certainly fit one of those
doors."

And he did get the chance, for the stout man, after looking in a shop
window or two on his way, turned into the bar of the Talbot Hotel.

Larose followed after him and standing by his side, as an encouragement
to conversation, ordered, as the stout man had done, a large rum and
raspberry.

The stout man made a nod of approval as he heard the order given and
smiled socially. "Good stuff in this darned weather!" he remarked with a
shiver. "Keeps the cold away!"

Larose agreed with a returning smile, and then lowering his voice, said
apologetically. "Excuse me, sir, but wasn't it you I saw just now,
coming out of Dr. Smith's consulting room in Moon Buildings?"

"Yes, it most probably was," replied the stout man with no surprise,
"for I've been to see him this morning." He wrinkled up his blotchy
face. "Do you know the quack, too?"

Larose shook his head. "No," he hesitated, "but as a matter of fact I've
been thinking of going to see him for some time."

"Then think better of it," growled the stout man with a grimace, "for I
can tell you he's not up to much." He took a long pull at his rum and
raspberry. "At any rate he's done me no good."

"Oh, then I'm so glad I ventured to mention it," exclaimed Larose
gratefully. "It'll save me wasting a guinea, at any rate."

"Guinea be blowed!" scoffed the stout man. "He charges two every time
you go in, and it's precious little you get for your money." He pointed
disgustedly to his blotchy face. "I've been to him to cure this, and all
he says is 'Rub on Zinc Ointment, wash it with oatmeal, and drink a lot
of water!'" He scoffed disgustedly. "I'm not going to give any more good
money to be told the same damned thing every time. I can yap that to
myself, without it costing me another penny."

Then Larose drew out skilfully quite a lot about the doctor's habits,
how he never kept regular hours and how it was never certain he would be
found in his consulting room two days together; how he always talked so
quietly and in such a hoarse whisper that no one could hear half he
said, and how he always seemed to be in a hurry and wanting to fire
everyone out as quickly as possible. He also learnt, when the doctor
bent over you, he always smelt of some 'chemical muck' and that he
always wore rubber gloves. There was no nurse or attendant that the
stout man had ever heard of, or had ever seen.

Larose treated his confiding informant to another rum and raspberry,
considering the information he had gained very cheap at the price.

"Now I must find out straightaway," he told himself, "whether this
doctor's man is Mitter or not, and if he isn't, I'll make some excuse
and go to consult the doctor myself, to-morrow, for whatever dirty
business they are up to, the two must be in it together."

He went into the Liverpool street Station Hotel and informed the young
woman at the desk that he was lunching there, and asked her to kindly
put through a trunk call for him. He gave the number of Carmel Abbey and
said he would wait in the lounge until the call came through.

He was soon summoned to the phone and, speaking to his wife, told her he
wanted her to find out at once if Herr Mitter was at home. She was to
ring up Dunwich Hall and ask Mitter if he would come to dinner one night
next week, but on no account was she to let Mitter know that he, Larose,
was in town.

Less than a quarter of an hour later Mrs. Larose rang up and gave him
the information he wanted. Mitter was at home, and she had spoken to
him. The butler had at first been very reluctant to fetch his master to
the phone, because the latter, he said, was very busy painting in his
studio, and at such times never liked to be disturbed. Mrs. Larose had,
however, made him take in a message and then Mitter himself had come to
the phone. Speaking very hoarsely, he had thanked her for the
invitation, but had said he didn't think he would be able to accept it,
because, at present, he was suffering from a very bad cold.

The following morning, looking now quite different to the old gentleman
of the day before, Larose was waiting near the entrance to Moon
Buildings by half past nine. He had inflamed the palm of his left hand
with a mustard leaf and was intending to consult the specialist in
diseases of the skin as to what was the matter with it.

The day was bitterly cold and inclined to be foggy, and, stamping his
feet to keep himself warm, Larose devoutly hoped it would not be long
before he caught sight of the man with the bag, or his master.

Ten o'clock came, half past, and then eleven, and with no appearance of
either of the two he wanted, Larose began to think it must be the
doctor's day off. But he was not going to be wholly disappointed if
neither of them did turn up, for in that case he was intending to take a
risk and see if the key he had found in the coat pocket would gain him
admission into the doctor's rooms.

But he must first be quite certain, he told himself, that the doctor had
not arrived, for it would never do to be caught red-handed trying to
open one of the doors. He must leave nothing to chance there and take
into consideration the possibility that either the doctor or his man
might have come into the building through the other entrance.

He waited until half past eleven, and then, neither of them appearing,
he entered the building, intending to enquire of the attendant on the
lift if the doctor were consulting that morning. If he were told the
doctor was not there, then he would leave by the main entrance, but
return again through the Fore street one and make his way up by the
stairs.

With this end in view, he was approaching the lift, which had just come
down and was discharging several passengers, when a tall and elderly
woman thrust herself before him and demanded of the lift-man in a very
shrill tone of voice if Dr. Smith had arrived yet.

"No, mum, I don't think he has," replied the lift-man, "for I took a
gent up, not five minutes ago, and he wasn't there then. Besides, I
haven't seen his man go up this morning, and he always comes half an
hour before the doctor, to get the rooms ready for him." He made a
motion with his arm towards the lift. "Still, he may have come in by the
other entrance, or I may have missed him when in the lift. So we'd
better go up and see."

"It's most annoying," complained the woman as she prepared to enter the
lift. "I'm a new patient and I've come all the way from Beckenham to see
him." She nodded vigorously. "But I've heard he's like this and that you
never can be certain he'll be here."

The lift disappeared, and Larose moved off a little way down the
corridor to wait and see what would happen, without being observed. He
had not long to wait, for the lift came down again almost at once, and
he heard the woman again talking volubly. "Well, I'm not going away yet,
although you do say you don't think he's likely to come now. I'll wait
down here and go up again in a minute or two. It's most annoying there
are two entrances to this building!"

Then Larose did not hesitate a second, but proceeded to run quickly up
the stairs.

"Now's my chance," he breathed exultingly, as he gained the suite of
chambers occupied by the elusive Dr. Smith, "and with any luck I'll soon
learn something about him and his mysterious man."

He inserted his key in the lock of the door, with 'Waiting Room' painted
upon it. The door opened at once, and, with a quickly-beating heart, he
stepped into the room and closed the door again, softly, behind him.

The fog began to gather densely upon the city.




CHAPTER IX.--"RUN TO EARTH"


Larose wasted no time in taking in the scanty furnishings of the waiting
room, but tip-toed quickly through a half-opened door, into what, he
knew at once, must be the consulting room, because of the desk, the
microscope and the row of dusty test-tubes in a rack upon the
mantel-shelf.

But for the moment he gave only a swift glance round, and then he darted
to another door that he saw led into a much smaller room. Then, with
noiseless steps, he was back again in the waiting-room and finding out
where the fourth room led.

He wanted to be able to cover his retreat if he should hear anyone
coming and was looking for some place to hide.

"Caught like a rat in a trap!" he frowned with a rather scared face.
"Not a thing to creep behind anywhere. There's no hope for me if either
of them come, and I'm taking a terrible risk."

Then his movements were like lightning.

"The consulting-room first," he whispered, as he ran back, and in two
seconds his hand was in the letterbox that he had noticed was affixed
there to the door from which he had seen Dr. Smith show out his patient
the previous day.

He drew out four letters and his eyes glinted as he saw the postmarks
upon them. "Glasgow, Portsmouth, Chatham, Burnham-on-Crouch!" he
ejaculated. "Great Scott! but it looks a sure thing!"

He thrust the letters hurriedly in his pocket and turned next to the big
roll-top desk. Then he felt the blood surge into his face and a sudden
pumping of his heart, for upon the rug under the desk-chair lay a small
bunch of keys.

For the moment he could hardly breathe in the excitement of such good
fortune, but then, swallowing hard, he took a good grip of himself, his
pulses calmed down and his face became as impassive as that of the
Sphinx. The room was darkening quickly, for the fog outside was becoming
denser every moment.

There were only four keys on the bunch and the one to the desk was
easily picked out. He unlocked the desk and rolled back the top. Then
his face puckered up into a frown, for his nostrils were immediately
assailed with an ether-like odor.

The desk was neat and tidy, and ignoring the contents of the pigeon
holes, he proceeded to pull open the large drawers down the side. In the
first one were maps, maps of every country in England, so it seemed; in
the second were current copies of the Army, Navy and Air-Force lists; in
the third were a number of cuttings from foreign newspapers and in the
fourth--and the eyes of Larose almost started from their sockets as its
contents came into view--were a pair of rubber gloves, a large wig, a
full grey beard, a bottle of collodeon, and a pair of big dark glasses.

"What! what!" he gasped incredulously, with his month dry and his heart
thumping like a piston, "then this doctor attends his patients in
disguise. These are the wig and beard that he was wearing yesterday!"

For a moment, then, the significance of his discovery seemed to paralyse
all his actions, and with gaping mouth he stood staring at the wig he
was holding in his hand.

Then he gathered up his thoughts again, and began to moisten his lips
quickly.

"But it can't be true," he whispered hoarsely, "and yet it must be,
however incredible it seems. This doctor and his man are the same
person! J. Reynolds with that bag is Dr. Smith, and he's been fooling
everybody here all the time." His thoughts ran riotously through him.
"Oh! Oh! But I begin to understand everything now."

Then, suddenly seized with an idea, he put on the glasses and the wig,
and holding the beard in his hand, stepped over to a mirror on the wall.
The fog was now making the light in the room so dim that he had to peer
closely to see what appearance the disguise gave him. He held the beard
up to his face to get the full effect. But then, apparently, not
satisfied, he darted back to the drawer of the desk, and, opening the
bottle of collodion, quickly moistened round the edges of the beard and
placed it in position.

"And that's what my stout friend meant," he went on breathlessly, "when
he said the quack always smelt of 'chemical muck.' It was this ether
solution he was smelling." He stared at himself in the mirror. "Oh! How
easily I could impersonate the doctor!"

Then suddenly he almost jumped out of his skin, for the bell of the
waiting room door buzzed loudly, and the handle of the door rattled as
someone tried to enter.

With his finger to his lips, Larose turned sharply; so sharply, indeed,
that he knocked over a chair and it fell among the fire-irons in the
grate with a resounding clatter.

Thereupon, whoever was outside the door began to rap loudly with his
knuckles, and a gruff voice called out, "Carrier here. Parcel, if you
please."

Larose felt a sickening feeling at the pit of his stomach, for he
realised on the instant that he must open the door, otherwise the
carrier might return downstairs and inform the lift-man that he had
heard someone moving about inside the room, and yet no one had come in
answer to his knocking.

So snatching up a long white coat that he saw hanging on the back of a
chair, and hunching up his shoulders as the rum and raspberry man had
told him the doctor always did, and prepared to speak only in a hoarse
whisper, with a prayer of thankfulness for the darkness of the rooms, he
shuffled over the floor and opened the door.

"Parcel for Brown and Brown," grunted the man in the corridor crossly,
as if he were annoyed at having been kept waiting, and he thrust forward
his cart-book. "Sign here!" he went on. But then, before Larose had had
time to take the pencil he was proffering, the man, after a quick start,
moved back a couple of paces to glance up at the number on the door.

"Oh! I beg your pardon, sir," he exclaimed apologetically, and now in
quite a different tone. "I see I've come to the wrong rooms. It's Brown
and Brown, the auctioneers, I want, number six, first floor. Very sorry
to have disturbed you," and with a great thankfulness upon the part of
Larose, the carrier moved off back along the corridor.

But the thankfulness of Larose was short-lived, for before the man had
gone five yards a shrill voice came loudly--"Dr. Smith, isn't it?" and
the voluble, elderly woman of the lift of a few minutes before, almost
jumped into the doorway.

Larose heaved a sigh that came almost from his very boots, but forging a
reluctant smile, he resigned himself to Fate and bowingly invited the
woman to walk in. All his life long he had been gambling with danger,
but never, he thought, had he taken such chances before.

At any moment he knew the man with the bag might arrive, and then what
was he going to do? Arrest him, knock him down, of course, hand him over
to the police for impersonating a qualified medical man, and trust to
the good fortune that had made him the master of Carmel Abbey, to
continue her gifts! All life was a gamble, anyhow.

But then another dreadful misgiving seized him. What was this woman
going to tell him she had got the matter with her, and what was he going
to say? He was certainly in a most awkward position! Ah! but he would
tell her. 'Zinc ointment, wash with oatmeal, and drink plenty of water.'
Most simple and inexpensive treatment, and certainly it could do her no
harm.

He ushered her into the consulting room, closing the door behind them,
and motioned her to a chair in front of the desk, with a gravity that he
thought becoming to a practitioner in diseases of the skin.

But before seating herself, the woman proceeded expeditiously to
disrobe. She took off her hat and the fur choker round her neck, then
her jacket, and placed them all upon the sofa. Then to his consternation
she began unbuttoning her blouse all the time talking rapidly and in
staccato-like tones.

"I've got a bad rash on my neck, doctor," she explained, "and it's
beginning to spread lower down on to my chest. I've had it on and off
for three years, and it irritates me most terribly. It comes on every
winter, and it's always worse when I've been out. The cold seems to make
it burn as if I'd rubbed mustard into it."

"Ah! hum!" remarked Larose very solemnly in a hoarse whisper. "Very
distressing, I am sure! Yes very distressing."

"And I've been to our four local doctors," went on the woman shrilly,
"and they haven't done me a bit of good. They say it must be nerves, and
people often get it at my time of life."

"Ah! hum!" remarked Larose again, "and it's very painful?"

"Yes, of course it is," snapped the woman. "It makes me feel downright
ill. Look at the rash here!" and she exposed a generous expanse of chest
for Larose's uneasy inspection.

"Ah! hum!" remarked Larose for the third time, and then catching sight
out of the tail of his eye of a large magnifying glass upon the desk, he
picked it up and proceeded to closely examine the inflamed area.

"You put your hand upon it," said the woman, "and see how hot it feels."

"Hum! Yes!" commented Larose, complying delicately with the request.
"There's a lot of irritation there." He appeared to consider deeply.
"Now has anyone else among your relatives ever had it?"

"No, we're all as healthy as trout. My father's eighty-two and my
mother's nearly as old. I come of a good, clean-living family." The
woman looked with some doubt round the room. "But can you examine it
properly in the darkness here? Hadn't you better switch on the lights?"

"Out of order," frowned Larose shaking his head, "but I can see
perfectly well, all I want to."

"Well, what do you advise?" asked the woman.

"Zinc ointment," replied Larose very solemnly. "Wash it with flour and
drink plenty of water."

"Wash it with flour!" exclaimed the woman incredulously.

"No, no, ahem! With oatmeal, I mean," corrected Larose hurriedly. "It
will do you a lot of good."

"But I've bought zinc ointment until I'm sick of the sight of its tins,"
went on the woman petulantly, "and it's done me no good."

"But it will with the oatmeal," nodded Larose. "That will make all the
difference."

"And why do I only get it when I go out in the air?" asked the woman
irritably. "The burning doesn't come when I stay indoors?" Tears welled
up into her eyes. "Oh! it's making my life miserable, and I get so
bad-tempered with everyone that my children must hate the sight of me."

Larose felt genuinely sorry for the deception he was playing, and then,
really desirous of helping her, his detective instincts suddenly awoke.

"Now, tell me," he whispered. "It only becomes inflamed when you go
out?"

"On cold days," corrected the woman tearfully. "Not on other days, not
when the weather's warm."

"Then what do you do different on cold days?" asked Larose. "It must be
something particular that brings it on."

"I don't do anything different," replied the woman, "except, of course
to wrap up more warmly. I wear this thick jacket and my fur choker. I'm
a bad one for the cold."

"Ah!" exclaimed Larose sharply. "You get it when you wear your choker.
Now let me look at that choker, please."

The woman reached back and passed it over and Larose proceeded to
examine it carefully. It was a cheap fox one and dyed a dark brown.
Larose's eyes glinted.

"And how long have you had the rash?" he asked.

"On and off for about three years," was the reply.

"And how long have you had the choker?" was the next question.

"About the same time. This is the third winter I've worn it."

Larose held up the length of fur. "Then, of course, this is your
trouble, my dear lady," he exclaimed smilingly. "It's the dye in this
fur that is irritating you." He chuckled in great amusement. "Don't you
see how it all fits in? The rash comes when you've been out on cold
days, when you've worn your choker. The rash has been troubling you for
three years, and you've had the choker for three years!" He snapped his
fingers together exultingly. "So that's all your trouble. It's as plain
as day to me."

The woman's mouth opened wide with her surprise, but whatever remark she
was going to make, was stayed by the interruption of noises that
proceeded from the waiting room. The door there was opened with a bang,
there was the sound of quick footsteps upon the floor, and then someone
rapped loudly and insistently with his knuckles upon the consulting room
door.

Larose had started from his chair and all the exultation had departed
from his face.

"More trouble!" he breathed. "More trouble. But who the devil can it be
now?" His pulse slowed down a little. "Still it can't be the man with
the bag, for he wouldn't knock, and it can't be a patient either, for he
wouldn't be in such a hurry." He felt the sickening feeling again in his
stomach. "Oh! what I'm letting myself in for!"

But there was no hesitation in the way he moved towards the door and,
from the expression on his face he was evidently prepared to be most
annoyed at the newcomer's want of manners. He opened the door sharply
and found a man, well muffled up in a long ulster, and holding a
suitcase in his hand, just inside the waiting-room. The man put his
finger to his lips and moved back a few paces as Larose appeared. Larose
stepped forward and pulled the door to behind him, thanking heaven once
more that the fog was making everything so dark.

"Sorry to interrupt you, Doc," whispered the man breathlessly, "but I'm
in a terrible deuce of a hurry and have run all the way from the
station. This cursed fog's delayed us and I've a bare half-hour only to
catch my own train at Euston. I didn't really intend to call here, but I
thought I should just have time."

He nodded vigorously. "You got the letter I put in the box yesterday,
didn't you? Well, that's right. I just popped in to tell you I'd seen
them off." He nodded again. "Good-bye, then, Doc, and don't expect to
hear from me until I've properly settled in and then I'll let you know
at once," and with a wave of his hand the man rushed from the room.

"Dear! dear!" exclaimed Larose, "and what did all that mean? Oh! if I
had been able to ask him who he was!" He turned back to the consulting
room door. "Now for the poor woman, and I must get her off, quickly,
although she doesn't look the sort to be shifted in a hurry."

But he was most relieved to see that the patient had now buttoned up her
blouse and resumed her coat and hat. The offending choker, she was
holding in her hand.

"Oh! I'm so grateful to you, Doctor!" she exclaimed directly Larose
appeared. "I'm certain you are right! I remember now, lending it one day
to a friend of mine, and she thought she'd got nettle-rash afterwards.
But, of course, no one put it down to this fur." She took out her purse.
"Now, what is your fee, please."

But Larose, smilingly, waived her aside. "Wait, and see how you get on,
first," he said. "Write to me in a month," and he opened the door for
her to go out.

"But I haven't given you my name and address yet," she said, looking
very surprised. "You don't know who I am."

"Ah! no, of course," nodded Larose, feeling rather sheepishly, but then
taking down her name and address, he ushered her out, making light of
her reiterated expression of thanks.

"Now for those other drawers," he whispered, when the door was closed
behind her, "and I must be quick, for it's tempting Fate to remain here
too long."

The contents of the first drawer on the side of the desk made him
whistle. "Whew! an automatic with a silencer! By James! but it's lucky I
didn't interview this doctor, and he came to suspect me!" He shook his
head frowningly. "My word! this crowd must be a desperate lot, and will
stop at nothing."

The contents of the other drawers consisted of cuttings from a number of
foreign newspapers and, what rather puzzled him, a number of the leader
pages of 'The Times,' neatly clipped together, and with their dates
going back from the previous day to many weeks before.

The drawers examined, he glided into the small adjoining room and, with
another of the keys, opened the safe. Then he whistled again, for he saw
bundle after bundle of one pound Treasury notes done up neatly in
elastic bands. Eleven of them, he counted, and making a guess, he
reckoned they each one contained fifty.

He closed the safe and was just looking round to determine what else
there was of interest when he again heard the sharp rap of knuckles,
this time, however, upon the consulting room door.

"Gosh!" he exclaimed with his heart beginning to thump again, "and who
the devil is it now?" He smiled a sickly smile. "Trades certainly brisk
today."

He took a hurried look at himself in the mirror to make sure the wig and
beard were all right and then opened the door.

It was the lift-man this time, and he was all smiles.

"New telephone directory, Doctor," he said, "and I thought I'd give it
you, as I was passing this way." His smile expanded to a grin. "Mr.
Jasper's just been and he looked pretty sick when I told him you were
here before him this morning. He's just stepped out to fetch some
newspapers for you that he said he'd forgotten."

"Who's been?" asked Larose in a hoarse whisper, and thankful once again
that the fog made everything so dark.

"Mr. Jasper," replied the man, and then, seeing that Larose had got his
hand to his ear and was holding his head to one side as if he were
puzzled and hadn't taken anything in he added, "Mr. Jasper, your man,
Doctor."

Larose felt as it he were almost going to drop through the floor, but he
managed to exclaim:--"Oh! yes, Jasper, of course. I'm rather hard of
hearing this morning."

"And he looked quite ill to me," went on the lift-man. "His face went
putty-colored as I was speaking to him."

"He's very late," growled Larose. "He'll be back soon, eh?"

"Yes, Doctor, he said he wouldn't be two minutes." The lift-man grinned
again. "But he couldn't believe you had come, already, until I told him
you had seen a patient and she had given me a shilling when she came
down, because she was so pleased with what you had told her. Then,
really, he looked as if he'd got the surprise of his life."

"Thank you, thank you," said Larose, taking the telephone book from the
man's hand and preparing to push to the door. "I'm much obliged."

Then, alone in his room again, his heart palpitated so furiously that he
could hardly get his breath.

"Oh! oh! what has happened?" he gasped. "The man with the bag has been
back and hearing someone was up here, he's gone away again! He couldn't
believe it and went putty-colored and looked ill! Good God! Of course
he's seen the game is up and bolted!"

His thoughts ran on, and then in the flash of a second his nerves
steadied, his pulse fell to calm and even beats, and his lips set in a
firm straight line.

"Ah! but has he bolted? Has he thrown up the sponge so quickly, or has
he gone to get help and is coming back here to put out my lights?"

The eyes of Larose glinted and he darted over to the drawer that held
the little automatic with the silencer. He made sure that the pistol was
loaded, tested the trigger to see that it pulled easily, and then put
the weapon in his pocket.

Then, with a decisive movement, he picked up the receiver of the
telephone upon the desk and gave Mr. Grant's private number at
Whitehall. He was fortunate to get through almost at once and his words
hissed into the mouthpiece, as he gave the secret pass word that had
been allotted him.

"It's Larose speaking. Quick! I've trailed that man from Foulness and
found his hiding place, although I'm half afraid he's bolted. Still,
there's a lot to investigate here. Send three good men at once, the best
you have, and one of them must be a fingerprint expert. Don't let them
lose a minute. Tell them to come to Moon Buildings on Finsbury Pavement,
room number nine on the first floor. They'll see 'Dr. Smith. Diseases of
the Skin.' on a brass plate on the door. They are to come into the
building, one at a time, and not ask any directions. Just come through
the main entrance, along the corridor on the ground floor, walk up the
stairs, turn to the right, and then it's the fourth door on the left.
Knock once, scrape with the finger nails, and then knock again. I'll be
waiting here."

He paused a few moments, as Mr. Grant methodically repeated the
instructions that had been given, and then went on quickly:--

"But I don't think there's any chance now of catching the man we want
red-handed, for unfortunately he got wind that a stranger had taken
possession of his room, and he drew back, almost on the very threshold,
just as he was coming in. But there'll be a lot here to interest you,
anyhow. There are four unopened letters that came by this morning's
post, and two of them are post-marked as coming from naval towns." His
voice rose. "But, whatever you do, come instantly, for there's just the
chance he may be returning with others to have a scrap with me."

"All right," came back the voice of Mr. Grant, even and very quiet,
"we'll be with you in twenty minutes."

It was not half a minute after Larose had put back the receiver, when
the telephone bell tinkled, and he started like a man stung by a hornet.
Then he stood stock-still as if he had been turned to stone, and the
expression upon his face was one of the most agonising perplexity.

What must he do, he asked himself, as his thoughts raced madly through
his tortured brain, and his hand hovered hesitatingly over the
telephone.

Was it the man with the bag ringing up to make certain someone was in
possession of Dr. Smith's rooms, or was it one of his confederates who
might betray information that would be of vital interest to the Secret
Service? Or, again, was it only just a patient ringing up for an
appointment?

But it was only for about five seconds that Larose hesitated, and then
he lifted the receiver with a jerk, and purposely shuffling his feet
about noisily, stood waiting for whoever had rung up to speak first.

He heard the sound of someone breathing heavily, but no voice came, and
then a long, deep silence ensued. It was as if two adversaries were
standing face to face, with each one waiting for the other to make the
first move.

Quite half a minute passed, and then Larose realised that the wire had
become dead!

He jerked the receiver back on to its hook and snatching up the
telephone directory that the lift-man had just given him, began
feverishly to turn the pages, to find out Dr. Smith's number.

It took him a long three minutes to pick out the Dr. Smith of Moon
Buildings from the many pages of Smith's in the book, and then the
receiver was back in his hand in a flash.

"Finsbury 278, speaking," he called out sharply. "I've just had a ring
from someone who got through to me here, but wouldn't speak. He's hung
up at his end, and I want to know who he was. I'm a detective from
Scotland Yard, and the matter's of vital importance. Can you possibly
tell me where the call originated?"

"I'm afraid not," began the girl at the exchange, and then she broke off
suddenly. "Wait a moment, I'll see." Then almost immediately her voice
came over the wire again. "Yes, you're lucky. Another operator remembers
it. It was Finsbury 906."

"Thank you very much," said Larose. "Then put me on to Finsbury 906, as
quick as you can, please," and in less than half a minute a deep gruff
voice was saying. "Thomson speaking. Thomson, the tobacconist in
Bishopsgate street."

Larose was all apologies, but explained quickly that he wanted to know
who it was who had just called Finsbury 278 from their place.

"A gent who came in for some cigars," was the reply in brisk and
business-like tones. "Don't know who he was and have never seen him
before."

"What was he like to look at, please?" asked Larose.

The tobacconist seemed uncertain. "O-oh! just ordinary, clean shaven,
fair height, medium age, and wearing dark glasses."

"Had he got a bag with him?"

"Yes, I think he had."

"Did you bear him talking when he was using the phone?"

"No, I didn't listen for him. I was busy with customers. He just asked
me if he could use the phone at the end of the shop. He paid me the
tuppence, and that's all I know. He was not by the phone, altogether,
more than two minutes."

"And that's that," said Larose despondently, as he hung up the receiver.
"We shan't see any more of him today." His face brightened. "Still,
there must be a lot here that will tell us something."

Mr. Grant and three very alert looking assistants were soon upon the
scene, and bidding the latter wait in the waiting room for a few
minutes, Larose took Mr. Grant into the consulting room and briefly and
quickly ran over all he had found out up to then.

"Now, sir," he said in conclusion, "while you and your men are looking
through things here. I'll have a talk to that man on the lift. It's
fingermarks you must get hold of, if you can, but I doubt if you'll find
any. That man with the bag wore suede gloves, and the precious doctor
here, rubber ones." He nodded hopefully. "Still, these kind of gentry
often make mistakes, and it's just possible one has been made here."

Leaving Mr. Grant to his investigations, he proceeded quickly down to
the main entrance of the building, and was just in time to catch the
lift-man passing over his duties to another attendant, and going off for
his dinner.

"Here!" said Larose sharply. "I want a word with you, and it's very
important. It'll mean a couple of pounds to you, perhaps, if what you
can tell me is any good. Where can we go for a little chat?"

"What's up?" asked the man, looking rather frightened, "and who are you,
sir?"

"I'm from the Yard," fibbed Larose. "Now where can we go?"

The man led the way to a service room in the basement, and Larose came
quickly to the point.

"What's your name, and how long have you been employed here?" he asked.

"David Bumpus, sir, and I've been here five years come Christmas."

Larose rapped out sharply--"Now it's about Dr. Smith and his man Jasper
that I want to know. How long has the doctor been practising here?"

The man hesitated. "I couldn't say off-hand, sir, but I should think
about a year and a half."

"And he doesn't come every day?"

"No; three or four times a week on an average, although some weeks he
comes every day."

"Do you always see him arrive?"

"No, not always. Sometimes he comes when I'm up in the lift, and
sometimes he comes in by the other entrance in Fore street."

"And I understand that his man always gets here before he does?" went on
Larose.

"Always," replied the lift-man. He corrected himself. "Except today, and
this morning----"

"Never mind about this morning," snapped Larose. "I know all about that.
Now, do you always see the doctor go away after he's finished his
patients?"

The man shook his head. "No, only sometimes, and the same with Mr.
Jasper."

Larose considered a minute. "Does the doctor get many patients?" he
asked.

"No, not many. He charges too much, and he's a bit too off-hand with
everyone. He never seems to mind whether he pleases or not."

"What kind of patients does he get. I mean men or women?"

"Oh, mostly men. Very few ladies."

"Are the men old or young?"

It was now the man's turn to consider. "W--e--ll, you see, sir, I really
don't know what patients do go up to him, for his rooms, being on the
first floor, a lot of them would use the stairs. Still"--the man
appeared to think hard--"still, I should say from the patients I've
happened to see going into and coming out of his rooms, that they are
mostly youngish men." He nodded. "Yes. I've seen very few old people,
now I come to think of it."

Larose eyed him very sternly. "Now one very important question, and you,
please, think carefully before you answer it." He punctuated every word
with his finger. "You say you've known this doctor and his man for about
a year and a half, and you've seen them come and go all that time!" He
spoke very slowly. "Well, have you ever seen them either arrive or
leave--together?"

The man shook his head. "No. Mr. Jasper always comes before the doctor,
and always goes after him." He smiled. "You see, he has to. He gets the
rooms ready in the mornings and tidies up in the afternoons."

Larose continued to speak very slowly. "Then never once in all these
eighteen or so months," he asked, "has it ever happened that you have
seen both Dr. Smith and this man, Jasper, at one and the same time?" He
rapped out his words like a bullet from a gun. "You have never seen
them--both together?"

The lift-man looked very frightened and his eyes opened wide in
consternation as he realised for the first time the drift of Larose's
question.

"We--ll, no," he stammered, "now I come to think of it, I don't believe I
have ever seen them both at the same time." Then his face brightened on
the instant, and he lost his frightened look. "Oh! but this morning I
saw Mr. Jasper coming in when the doctor was in his rooms. So----"

"Never mind about this morning, I tell you," interrupted Larose
brusquely. "That wasn't Dr. Smith who was up in his rooms. It was
someone else, wearing the doctor's wig and beard."

"What!" gasped the man, "his wig and beard were false! Then----"

"Yes, yes, of course," said Larose testily, "and you ought to have
spotted it months ago." He waved the matter aside. "And now another
question, and think again before you answer. How did this Jasper come
into the building this morning? Did he walk quickly up the steps?"

"Yes, sir," replied the man, shakily, "very quick and brisk as he always
does."

"And he stopped to speak to you?"

"No, I stepped out of the lift to speak to him. I was having a little
sit-down when I saw him come in."

"And then----" asked Larose.

"'Hullo!' I said. 'You'll catch it. The governor's been up there half an
hour already,' and he stopped dead. 'What do you mean?' he asked. 'He's
been here a long time,' I said. 'He's had one patient, too, a woman,'
and then I showed him the shilling she'd given me, because she was so
pleased. Then I though he looked very ill, for he went awfully white.
'Oh! and I've forgotten his paper,' he said. 'I'll be back in two
minutes,' and he rushed out and I haven't seen him again."

"And you won't see him again," snapped Larose, "for he was the doctor
and the doctor was him. He saw the game was up and he cut while he
could. He's a crook, I tell you."

"But how could I see Mr. Jasper come some mornings," asked the man with
a catch in his breath, "and then half an hour later the doctor come
too?"

Larose looked scornful. "Couldn't the man go up and put on the doctor's
beard and wig," he asked, "then sneak out through Fore street and then
make his way round and come in through the main entrance?" He clicked
his fingers together. "You booby, he's been making fool's of everyone
all along." He spoke very sternly. "Now, look here my friend, this is
police business, and for the sake of the building you must hold your
tongue. Not a word to anyone. Do you understand?"

The man nodded. "Yes, sir, I won't say anything to anyone."

Larose then took out the page cut from the 'Sphere' and asked him if he
could recognise anyone in it as being at all like Jasper, but to his
disappointment the man, after a hard stare, shook his head and was
unable to point to anyone.

"Now, just one last question," said Larose. "Do you remember if this
fellow, Jasper, or Dr. Smith did not come to these buildings upon any
days of the week before last."

"I never saw either of them upon any single day of that week," replied
the man most emphatically. "I am quite positive about it, because some
of the patients were most unpleasant when the doctor was not here." He
smiled a sickly smile. "The ladies seemed to blame me for it," and
Larose was quite heartened by his confident reiteration of his
statement.

"So I am right," ran his triumphant thoughts. "This Danker, the old
tailor, J. Reynolds and Dr. Smith are one and the same man!" His face
clouded. "But oh, to link them up with Mitter seems quite impossible!"

He returned upstairs, to find the quiet and uncommunicative Mr. Grant
flushed and excited, for probably one of the very few times in his life.

"This is the crowd we're after," he nodded to Larose, as the latter
entered the room, "and there are enough problems here to keep us busy
for a long time. These four letters are in cipher." He held up a sheet
from the 'Sphere.' "Here is a photo of the stranded Mary Belle, and
here"--he smiled a dry, grim smile, and pointed to the open page of a
small memorandum book upon this desk--"is my private telephone number at
my house, although how they got hold of it heaven only knows, for it's
not listed in any directory."

"But are there any finger-prints?" asked Larose eagerly. "We might get
Mitter that way, if Mitter ever came here."

"No, there are none, except those that are almost certain to turn out to
be yours," replied Mr. Grant disappointedly. "Not a single one anywhere
where you would expect to find them, and even these rubber gloves here
are dusted inside so heavily with talc powder that we shall get no
prints from them."

There was a long consultation that night in Whitehall, between Larose,
Mr. Grant, Sir Herbert Carnaby, Colonel Bevan and several other heads of
the Intelligence Service.

"And they must have great resources and be very finely organised," said
Mr. Grant. "We haven't been able to decode those letters yet, but a man
who had been staying at Burnham-on-Crouch, since January last, cleared
out on his motor cycle just before two this afternoon, leaving all his
belongings intact behind him, and, one of the best oxy-welders working
on the destroyers in Chatham left his job hurriedly about the same time
and we can get no traces of him. Also, there are three absentees from
the torpedo sheds in Portsmouth tonight."

He nodded significantly. "Warnings must have been sent out instantly, in
all directions, but through what channels there seems no possibility of
determining. I tell you, that man at Burnham-on-Crouch cleared out
without apparently, a minute's hesitation, and yet no telegrams of any
description reached the post office there between one and two, and the
only trunk call from London during that time was from a private hospital
in Marylebone to the vicar of Burnham about the progress of his daughter
who has just undergone an operation." He shook his head. "It is most
puzzling!"

"And about those four letters in cipher," said Larose, tentatively.
"I've been thinking that, perhaps those leader pages of the 'Times'
might perhaps give you the key, the cipher being changed every day."

Mr. Grant smiled. "We have had experts working in that direction ever
since I brought the pages here." He looked very grim. "That gentleman
who disappeared with such celerity from Burnham-on-Crouch had the
'Times' delivered to him every morning, and the post mistress in the
adjacent little village of Southminster remembers stamping a letter,
only a few days ago, addressed to a Dr. Smith of Finsbury Pavement." He
sighed. "These men are very thorough."

A long silence followed and then Sir Herbert Carnaby remarked in
business like tones. "Then, as I take it, the position is this. We have
absolutely nothing personally against this Herr Mitter, of Dunwich Hall,
for no one recognises him in any of the four personalities Mr. Larose
has so cleverly exposed. Still, we know that in any case, it could not
possibly have been him in Moon Buildings, because when that pseudo Dr.
Smith was attending patients in there, Mitter's butler testified that
his master was at home and, added to that, Mrs. Larose had a
conversation with Mitter over the phone, almost at the same time." He
looked round at the others assembled there and asked:--"Well, with
regard to Mitter, what are we going to do?"

"I'll go and see him," snapped Larose. "I'd stake my life he was in this
business, somehow, and although he's got away with it, his confidence
must be badly shaken now. He must realise that we only just missed a
grand slam and it will be a devil of of a worry to him, as he wonders
who stacked the cards. Yes, I'll go and see him, and that butler of his,
too. Somehow, I'm not satisfied there." He nodded. "And remember, he's
got another bit of business on. Don't forget that man who came knocking
upon the consulting room door in such a hurry." He looked round
questioningly at the others. "Who were those men who went off from some
railway station this morning, and what are they up to?" Then receiving
no answer from anyone, he smiled and nodded again. "Well, anyhow, I've
got a few ideas."

"That's good," smiled back Mr. Grant, "for in all my life, I've never as
yet met anyone whose ideas turned out so valuable."




CHAPTER X.--THE ADVENTURES OF MARGARET ADVENT


As Margaret Advent had said, Lieutenant Selby Fortescue was certainly a
nice natured boy, and when, just outside the village in the dusk of that
Friday evening, he picked her up in his car, he would have been
distressed beyond measure had he known exactly what was passing in her
mind.

He had been struck with her appearance each time he had called at
Dunwich Hall, and had thought her as pretty a girl as he had seen in all
his life, and like most young fellows of his age, being always ready for
an adventure with one of the other sex, and getting speech with her
alone, that day when Herr Mitter was away from home, on the spur of the
moment he had suggested they should have an outing together. He just
meant to take her to some place of entertainment, give her a good time,
and perhaps have a little love-making with her on the way back.

But as for any serious intentions on his part, he would have been aghast
at the very idea; indeed, after he had asked her to come, he had felt
very ashamed that he was intending to be friendly with the maid-servant
of a man at whose house he was an honored and welcome guest.

All his own family moved in good social circles. His late father had
been General Sir Newman Fortescue, K.C.M.G., his mother was the
grand-daughter of an earl, and his uncle was Sir Blenheim Fortescue, of
a baronetcy that went back for more than three hundred years.

Margaret herself was quite aware or his aristocratic forebears, for she
had looked him up in Debrett, but, in her great self-confidence she was
not by any means thereby deterred from her intention, if she really came
to be fond of him, to put their relations ultimately upon a matrimonial
footing.

After all, she told herself, if it were only known, she might be perhaps
quite as well-born as he was. Her parents, indeed, might be among the
very highest in the land, and if, as probably, she had not been born in
matrimony, yet it was not her fault and in no wise detracted from her
breeding.

She had looked at herself in the mirror just before she had set out to
meet him and had nodded with approval at her appearance in the attire
that had cost her several months' wages.

She was wearing a well-tailored coat and skirt, a closely-fitting hat
that matched her costume, and a white crepe-de-chine blouse. Her shoes
had been purchased at one of the best shops in Ipswich.

Young Fortescue elevated his eyebrows ever so slightly as, with a bright
nod, she stepped into his car. He knew a smartly dressed girl when he
saw one, and the night was still good enough for him to be able to take
in the girl's appearance.

"Now where are we going?" asked Margaret, when she had settled herself
down comfortably and the car was gathering speed.

It was the question Fortescue had been rather dreading, for although he
had set off at a good pace to gain the main road, he had no idea as to
where he was intending to take her. He wished he had not mentioned
pictures at all, for he certainly could not take her to any in either
Ipswich or Colchester. He might meet some of his brother officers in
both of those towns, and besides, so many of the county people around
were on visiting terms with the master of Dunwich Hall, that it might so
easily happen he would he seen in the company of the girl they would at
once recognise as Herr Mitter's parlormaid.

"We--ll," he said hesitatingly, "there are no decent pictures on just now
anywhere near here, so what about a nice little dinner somewhere, say at
the Angel at Bury-St. Edmunds?"

"Oh, yes," said Margaret at once, "a dinner somewhere. I feel quite
hungry already." She considered for a few moments and then asked. "But
this car's a pretty fast one, isn't it?"

"Faster than the law allows," he smiled.

"Well, let's get right away," said Margaret. "The people are so gossipy
about here, and you won't want us to be seen by anyone who will
recognise me. So, why not go straight up to town?"

"That's a good idea!" exclaimed Fortescue with great relief, and yet
wincing a little that she had voiced his thoughts with such accuracy.
Then he added quickly. "But it'll make you rather late getting home."

"Oh! That doesn't matter," said Margaret. "In fact, any time will do for
me. I've got the latch-key here."

Then a long silence followed as the car sped swiftly along, with
Margaret feeling supremely happy. The speed exhilarated her, the purring
rhythm of the engine was like some soft and beautiful melody, and she
was thrilled that at last she was partaking in one of those adventures
which hitherto she had all along denied herself.

Young Fortescue was happy, too. He could not see his companion, as there
was no light on inside the car, and besides, at the speed they were
travelling, he dared not take his eyes off the road; but mindful of how
pretty Margaret was, it delighted him to feel the warmth of her body as
it occasionally touched his. He could smell, too, some delicious perfume
that he was sure must be, in part innate to the queenly little head so
close to his. His pulses quickened at the thought of the bit of
love-making he might, perhaps, have on the way back.

They slowed down passing through Saxmundham, and then, outside the town,
he switched on the light inside, so that at last he might have a good
look at her.

"My word!" he exclaimed, when for a few seconds he had feasted his eyes
upon her piquante face, "but you do look nice tonight. Fancy your"--but
he hesitated, and then stopped speaking, feeling rather embarrassed at
what he had been intending to say.

"----being a parlormaid!" she finished gaily for him. Then after a few
moments she went on smilingly. "But for all you know of me, I may be a
princess in disguise."

"Gad!" he exclaimed fervently, "and you look like one. Honestly, I've
never met a prettier girl before."

She laughed softly. "No compliments, please, for you don't know me well
enough yet. Switch off the light, too, if you don't mind and then you
can concentrate upon your driving. Didn't I tell you I was hungry and
wanted something to eat? Besides, the darkness is so restful."

He obeyed her without a word, and then another long silence followed,
until they were running through Ipswich and passing 'The White Horse'
Hotel.

"Oh! that's where dear old Mr. Pickwick stayed!" she exclaimed with
animation. "Now, do you realise that a whole hundred years have gone
since 'Pickwick Papers' was published?"

"No, has it really?" he asked, genuinely surprised. "I had no idea the
book was as old as that."

"Yes, and I think that, more than anything, makes Essex such an
interesting county for everyone. There's an atmosphere of Dickens all
along this road."

"Are you very fond of reading?" he asked.

"Oh! yes, and I've read quite a lot. My first situation"--young
Fortescue winced for the second time--"when I was only fifteen, was with
an old Cambridge Don. He had a glorious library, and I read so many of
the old classics that no one seems to read today. I got a real education
there, as good as any money could buy, for my employer was interested in
me, and I sort of studied under him."

"Were you there long?" asked Fortescue, rather astonished at the line
the conversation was taking.

"Four years," was the reply, "and then when he died I went to Lady
Headle. Everything was quite different there, and it was all newspapers
and magazines. She entertained a great deal, but had very few serious
people. I stayed with her for two years."

"And I suppose you had a rather rough time there?" suggested Fortescue,
frowning, he did not know why.

"Oh! no. I soon got to know my work, and did it, and that was all."

"But I expect you had plenty of----" then Fortescue hesitated and
stopped again.

"Followers! you mean," laughed the girl. She seemed very amused. "I
might have had, but I wasn't enough interested in anyone. A member of
the House of Lords wanted to take me and train me as his secretary, and
the lessee of a theatre offered to get me on to the stage."

"And why didn't you accept one of the offers?"

It was Margaret who hesitated now. "We--ll, some girls, they say, have a
sort of instinct that protects them, and I must be one of them. The peer
was a dear old gentleman, but it was me he wanted, and not any secretary
at all. Then the theatrical man--well, the salary he offered was much
too much and, besides, I was afraid of him. He was very handsome, but he
had got a wife, although he was separated from her."

They chatted animatedly all the way to town, and young Fortescue became
more and more astonished at the girl's knowledge of things in general.
Many times she could have taken him out of his depth in the subjects
they discussed, and she was far better informed, he realised, than the
ordinary run of girls in his own class. With every mile they travelled
he became the more interested in her, but a somewhat chilling idea began
now to take possession of him that, perhaps, after all, that bit of
love-making he was expecting later, was not quite so sure a happening as
he had once thought.

They reached town soon after seven, and driving the car into a garage
off Oxford street, he had another shock when he got a full view of her
under the big arc lights there.

"But she looks a perfect little lady," he told himself, "and I can take
her anywhere." So a few minutes later, instead of the quiet little
restaurant in Soho at which he had been intending they should dine, they
were walking through the magnificent foyer of the Apollo, one of the
most expensive and fashionable places in town.

"And I don't care who sees us," he muttered. "I shall be the envy of
every man here."

He chose a table far enough from the orchestra that they could converse
in comfort and when they were seated and he had dispatched their
particular waiter to fetch the wine one, he handed her the menu.

"That means caviare with egg," he explained, pointing to 'caviare aux
oeufs.' "Will you try some?"

She nodded with what he thought was an amused smile, and then when their
waiter, an obvious foreigner, returned, she requested the latter in
perfect French, to adjust the screen behind her so that she could not
feel a draught.

Fortescue reddened in discomfiture, and then when the waiter had gone
off, she said laughing, "Forgive that little bit of show-off, but I
speak French quite well. I learnt the grammatical part with that old
Don, and later was able to perfect my accent with two winters in the
South of France. Lady Headle had a villa in Nice and always took me
everywhere with her."

"But, by Jove, you're a funny girl to be in anyone's service!" exclaimed
Fortescue. "I don't understand it."

"Oh! I shan't be always a maid," she retorted with a smile, "for I'm
very ambitious. I'm writing a story."

The big salon was filling rapidly, and she took in appreciatively the
beautiful dresses of the women. "Never mind," she told herself. "I'm
quite all right as I am, and he can't be ashamed of me."

And certainly she was correct there, for Fortescue was feeling very
proud of his pretty companion. Hardly a person passed that did not give
Margaret a second look, and the glances of the men near them, he
noticed, were many times turned in her direction.

Presently he said, "But tell me, Margaret, how do you come to be where
you are?" He frowned, as if very puzzled. "Is there some mystery about
you?"

"Yes," she nodded, "there is a mystery"--she sighed--"and one perhaps,
that will never be cleared up."

"But where do you come from?" he asked. "Where do your people live?"

She regarded him very solemnly. "I have no people," she replied, "and I
don't know who I am." She looked him straight in the face. "I am a
foundling, Mr. Fortescue."

"Good God!" he exclaimed, "you poor little thing!"

"Yes," she went on, "on Advent Sunday, 22 years ago, someone left me in
a basket on the door step of the Foundling Hospital. That is why I am
called Advent. The Christian name, Margaret, was written upon a piece of
paper pinned to my baby clothes."

Fortescue looked very distressed. "What a shame!" he exclaimed.

"Yes, it was rather cruel," she smiled, "wasn't it?"

"And have you never tried to find out who your parents were?"

"How could I?" she asked. "Where could I begin?" She held out her hands
towards him and her eyes sparkled with fun. "What do you think of these,
Mr. Fortescue? Do they come from common people?"

With a puzzled smile, he regarded them critically. They were small and
dainty, beautifully shaped, with fine tapering fingers, hands that an
artist would have loved to paint, or a sculptor to set in marble.

"Hardly!" was his verdict. He lowered his voice impressively, and there
was a depth of fervency in his tones. "They are the most beautiful hands
I have ever seen."

She bowed smilingly in appreciation of the compliment. "And so do you
wonder that I set a value upon myself, that I didn't go as secretary to
that old lord or accept the offer that theatrical man made me?" She
nodded. "One day I may perhaps come to know who my parents are, and then
I don't want to disgrace them, however wrongly they have served me."

Fortescue heaved a big sigh. The bit of love-making, he thought, was
receding farther and farther into the background!

They lingered over their meal until nearly 10 o'clock, and then Margaret
suggested that they had better think of leaving.

"As it is, I shan't get home until nearly 1 o'clock," she said, "and
that's late for a would-be respectable young woman."

There were long, deep silences between them during the drive back when
both were busy with their own thoughts.

Young Fortescue's admiration was now mingled with a great pity and an
intense longing to protect her, while Margaret was telling herself what
a really nice boy he was and hoping that he was not disappointed in her.

Then the girl remembered all at once the real reason why she was
supposed to have spent the evening with him, and what Mitter had asked
her to find out.

"What made you become a soldier, Mr. Fortescue?" she asked.

"Because it's in my blood," he replied. "My father and his father before
him were soldiers, and we've had soldiers in our family for many
generations."

"But I think if I had been a man," she went on, "I should have chosen to
go into the air service."

"I wanted to," he sighed, "but I'm the only son of my mother and she
dissuaded me." Then his next words, lightly spoken, were to make all the
difference to Margaret's life. "Yes, it is the air service that is going
to save this little island of ours, for it will be only our aeroplanes
that will stand between us and being conquered by some other country."
He saw the road in front was clear and flashed a quick look down upon
her. "Do you know my dear, if it weren't for those wonderful new planes
we've got, everyone is sure a certain country would be making an attack
upon us within the next few months. This particular country has only got
to find out the secret of them and then--bang--and men, women and
children over here will all be gasping out their lives in agony when the
liquid fire and poison bombs are dropped."

"Liquid fire and poison bombs!" gasped Margaret. "They would never be so
cruel!"

Fortescue laughed. "Oh! don't you make any mistake there. They'll stop
at nothing when the next war comes, and if we only knew it, in a certain
country they are straining every nerve now to find out where and of what
those invisible aeroplanes are made." He smiled in amusement at her
astonishment. "Over across the North Sea they are not all harmless and
kind-hearted gentlemen like our esteemed friend, Herr Mitter."

But Margaret made no comment. She was too startled to speak. She felt
all suddenly as if a knife had been plunged into her heart and she went
icy cold and held her breath. Not all kind-hearted and harmless like
Herr Mitter! Poison bombs would be dropped in England. Some foreign
country was straining every nerve to find out where the new aeroplanes
were being made! What did it all mean?

It was as if the door of some room, which, day after day she had been
passing with unconcern, had suddenly swung open and disclosed to her a
scene of ghastly horror. A mother with her face distorted in agony,
clutching to her baby who was in the throes of suffocation from poison
gas! A little child who was groaning because its eyes had been burnt
out!

Good God! and she had been helping to bring about this dreadful torture!
She had been sent out that very night to act the spy!

It was like a dreadful dream, from which she had suddenly awakened.

Young Fortescue was still speaking--"but of course, as I say, Herr
Mitter is a gentleman and would countenance none of these things.
Indeed, the general opinion is that he is only living over here to get
away from the madmen in his own country." He turned the conversation.
"But here, I say, when can you come out with me again?"

Margaret found her voice with an effort. "Whenever you like," she
replied, a little faintly. "I can always manage it."

"Are you fond of dancing?" he asked.

"Very, but I get very few opportunities now."

He considered for a few moments. "Well, what about next Thursday? We'll
go to a night club I belong to and you shall enjoy yourself. I promise
you."

Margaret hesitated. "My dress will be all right," she said, "but I have
no jewellery at all."

He laughed merrily. "Your eyes, Margaret, will be finer jewels than
anyone's there. No, of course, having no jewellery doesn't matter.
You've quite enough to please without that."

They drove on for many miles without further conversation until at
length they came to the place where he had waited for her just outside
the village, and there the boy slowed down and finally stopped. Then
with a sigh he stretched out his hand to open the door, while Margaret
was thanking him prettily for the good time he had given her.

"And I've enjoyed it tremendously," he said. "Never had a better evening
in all my life."

A short silence followed and he still kept hold of the handle of the
door. Then he said suddenly and with a little catch in his voice. "But I
say, Margaret, aren't I going to have any reward? Nothing at all?"

She made no pretence she did not understand, but after a hesitating a
moment, said, laughing softly. "I suppose I ought to give you
something," and she put up her face to his. "Just kiss me once." Then as
he attempted to draw her passionately to him, she exclaimed quickly.
"No, not an embrace, Mr. Fortescue. P-l-ease, not yet," and so all young
Fortescue carried away was the memory of two soft lips that he had been
allowed to press ardently, but for a very short time.

"Damn the little witch!" he exclaimed, as he drove at a fierce pace back
to Colchester, "but I'd have almost given a year out of my life to have
got as many kisses then as I wanted!"

That night neither he nor Margaret slept much. The boy tossed and turned
and turned again. One minute he was furious with himself for harboring
such longings for 'a parlormaid,' and the next he was considering
Margaret as of patrician blood and worthy in every way to be the mate of
any man.

"Poor little devil!" he murmured. "I wonder what her future's going to
be!" He shut his tired eyes with a vicious snap. "Wouldn't mother gasp
if I told her that I was falling in love with someone's parlormaid, and
yet--wouldn't she be proud of her if she were only one of our own set."

And Margaret had tender thoughts, too, but they were all forgotten when
she had tucked herself in bed and lay wide-eyed, staring into the
darkness.

She was simply horrified at the realisation that had come to her so
suddenly as to what the true nature of Mitter's work must be. She could
see now that for months, and months, and all unknown to her, a store of
dangerously inflammable material had been accumulating in her mind. Then
one chance word of young Fortescue's had been the spark to send it up in
awful flames.

Day by day, Mitter had been trusting her more and more and she had come
to know so many of the secrets of Dunwich Hall and its master, secrets,
however, that the latter had always made out to her were harmless or of
little importance to anyone.

Now, however, she knew differently. His secrets were dreadful ones, and
might mean most awful suffering for thousands and thousands of poor
helpless creatures, whose only fault was that they were not of Mitter's
own country.

And the Government knew something of what Mitter was doing, for they
were getting Dempster to watch him! But they did not know half what she
knew, for they did not realise the trick that he was playing them. They
did not know that he--oh! but there were scores of things they could not
know, or they would have stopped him a long time ago.

She tried to think calmly of what she must now do. Of course, she did
not intend to tell anyone about him, for he had always been very kind to
her, and she had once thought she had been very fond of him. No, she
knew she could not betray him!

But then suddenly a feeling of great resentment began to surge through
her and she saw things in a very different light. Herr Mitter had
certainly been most kind to her, but had it not all been she now asked
herself, simply to serve his own ends? In the beginning he had led her
on to become fond of him, being sure then that she would never tell
anything of what she might learn was going on in Dunwich Hall. But now
with her eyes opened, she could so plainly see that after all he had
only trusted her just as far as he had been obliged to, and that in
many, many ways she had been as intentionally deceived as everybody
else.

Oh! how blind she had been!

Well, she would never lift a finger to help him any more! She would
never get hold of Dempster's letters again, and she flushed with shame
as she thought of what would be young Fortescue's opinion of her if he
knew what she had been doing there.

Her thoughts ran on. Of course, she must leave Dunwich Hall as soon as
possible. She would tell Mitter she wanted to better herself and had
decided to go to London to get a proper training in some school, for
secretarial work. If he objected, then she would disappear suddenly.
Thank heaven, she had saved some money!

But she would not let Mitter know what she was now certain of him. She
would appear just the same to him, until she had perfected all her
plans, and as for Dempster's letters--well she would say he gave her now
no opportunity of getting hold of them.

She fell asleep at last and had a dreadful dream that someone had just
saved her from being murdered. She did not know who her rescuer was, but
she thought his face was like that of one of Herr Mitter's friends, the
pleasant smiling Mr. Larose, who had that beautiful wife with the red
hair.

After breakfast when she was busy in the study, Mitter came in and asked
her, smilingly, how she had enjoyed herself the previous night. With a
great effort, she masked her feelings, and, smiling back, told him where
Fortescue had taken her.

"And did you get anything out of him about his airman cousin?" asked
Mitter eagerly.

"No, I brought up about aeroplanes," she replied, "but he didn't mention
him." Then as she saw Mitter frown, she added, "I couldn't be too
pointed in my questions, all at once, but as he's asked me to go to a
dance with him on Thursday, I may perhaps find out something then."

"Well, mind you try hard," nodded Mitter. "Find out where that cousin
is, for it's most important."

Then followed for Margaret a very eventful fortnight. Fortescue took her
out three times, and with each meeting they both fell deeper in the
toils. Never for a moment now did he regard her as a parlormaid, and all
his thoughts were that one day she would become his wife.

He was delighted when she told him she was intending to leave Dunwich
Hall, and one day he made a special visit to town to pick out some
training school for her.

"And you can forget then, sweetheart," he said, the last night when he
was bringing her home in the car, "that you have ever been in anyone's
service. With what you know now, your training should be a very short
one, and then, with your appearance, you'll be sure to get a good
position at once." He laughed happily. "But you won't be keeping it
long, for I'm quite well off and we can be married next year."

"But I'm not aware, dear," she laughed back, "that I've agreed to marry
you yet." She became serious. "What will your people say when you tell
them you are marrying a nameless girl?"

"I shan't tell them," he said emphatically. "No one shall ever know.
We'll invent some mythical parents who died in Australia and we'll have
it all cut and dried. You must get a position, too, with some newspaper,
and then it will sound so much better when I introduce you to my people
as a journalist. That's quite respectable and may mean anything. I can
say you're a literary woman."

She considered for a few moments. "But now I think seriously of you,
Selby"--they had exchanged kisses without reserve--"It doesn't seem
quite fair to me, for in one way you are certainly giving so much and I
so little."

"Nonsense!" he exclaimed sharply. "You are giving me the most wonderful
present in the world." His voice dropped into tender tones. "You are
giving me yourself, sweetheart. We are man and woman together, and there
is no difference between us now."

And they left it at that.

The opiate dreams of Youth! Slumber so deep that there would he no
waking till the passion hours had passed, and then, maybe, the memory of
their dreamings would hallow all their lives--until Life ended!

But the terrible moment came when Margaret had to tell Mitter that she
intended to leave him. She knew he was not pleased with her, for she had
averred, insistently, that she could get no information out of
Fortescue, and, added to that, she had made out she could no longer get
hold of Dempster's letters, for the latter, she had said, had taken to
carrying them about with him, in his pocket, until they were actually
given into the hands of the postman.

It was one night, too, when Mitter appeared to be dreadfully worried,
although she had not realised it until she had started to speak.

She had come into his study when all the rest of the household were
asleep, and had found him lying back in an armchair and gazing with deep
thought into the dying embers of a fire that he had been too preoccupied
to notice had almost gone out. When he turned to listen to her she saw
that he was frowning heavily and that his face seemed deeply lined with
care.

For a few moments he regarded her as if he was not taking in the import
of what she was saying, and she had to repeat what she had come to tell
him.

"So you want to leave, eh?" he ejaculated incredulously, and then he
rapped out sharply, "What's your reason?"

"I just told you," she said. "I want to better myself. I don't want to
remain in service any longer."

He shook his head frowningly. "No, give me the real reason," he said.
"That's not the real one." He spoke very sternly. "Is it Lieutenant
Fortescue who has advised you to do this?"

She hesitated. "He didn't advise me, but when I told him what I was
going to do, he certainly agreed it was the best thing. He's found a
training school where I can go to learn the work of a secretary."

Mitter smiled a dry, grim smile. "Very obliging of him, I am sure." He
eyed the girl very intently. "Are you in love with that boy, Margaret?"

She nodded. "I think so."

"And has he told you he's going to marry you?"

She nodded again, but this time without replying, and he went on
sharply. "Has he asked you anything about me?"

"Not one single thing," she replied instantly. "He has a very high
opinion or you." She raised her voice slightly and spoke with some
emotion. "Oh! don't you understand, Herr Mitter, why I must leave? An
officer in the army cannot marry a parlormaid, and I want to be
something better than that when I become his wife."

"But you have been such a help to me," he began, speaking very slowly,
"you have----"

"I know what you're thinking," she broke in quickly, "but you need not
have the slightest worry there. I shall never tell anything of your
affairs to anyone, not even to Mr. Fortescue, if I become his wife. It
will be as if I had never helped you in any way."

"And I think I can be sure of that," he nodded, after a moment of
reflection. Then he asked abruptly. "But when do you want to leave?"

"As soon as you can let me go."

He appeared to consider. "Well, give a little time, a fortnight or so,
or perhaps a little longer." He spoke very sadly. "I shall be sorry to
lose you, Margaret." He shook his head. "But run away now. I've a lot to
think about. Good-night."

Then when she had gone and the door was closed behind her, he drew in a
sharp breath. "Yes, damnation, a lot to think about, and now you, young
woman, have given me even more still!" He nodded to himself. "But with
the best of intentions, if she leaves, she will be dangerous! A woman is
too emotional to trust when she's in the close intimacy of married life.
One day that boy will ask some chance question about us here, and
then--out in a rush will comes all she knows."

He seemed to hesitate in his thoughts. "N-o-w, if she were a man, I
could deal with her, for extreme measures would be entirely justifiable
here, but a woman and a girl like Margaret--well, well, I must think
what I must do." He shook his head vexatiously. "But she shall not go to
London. She shall be got out of the country, somehow."

He thought on. "But what did really happen this morning, and how did
they come to learn of Moon Buildings? It is a terrible blow, for it
means that there is a traitor somewhere! Not that they can lay hands on
anyone now, for the warnings went out in time! And not, even if they
make out these cyphers, will they learn anything further, for they will
be at a dead end there, too, as I have confided in no one man to the
extent that it is in his power to betray us all!"

He almost held his breath. "But the dreadful thought is I do not know
who this traitor is, and when I entrust to him more work, he may betray
us again! So, the question is, dare I go on with this other matter? Yes,
yes, I am safe there, for the traitor cannot be either Fletcher or
Dukes. They do not know of the existence of Moon Buildings."

He thought on for a long while, and then his face brightened a little.
"But perhaps after all it had nothing to do with the Intelligence
Department, and I am worrying myself without reason. It may have been
just some chance thief who got into the rooms, and then bluffed it out
when that woman patient somehow surprised him." He sighed doubtfully.
"At any rate, I shall be sure to learn soon."

And he did learn very soon, for in the middle of that same night he was
awakened from a fitful sleep by a gentle tapping upon the window of his
room, and jumping out of bed, he lifted the window very softly.

"There was a long deliberation tonight at Room 13," came the low whisper
of a man who was crouching down outside, "and Gilbert Larose was among
those who were there."

"Whew!" whistled Mitter, and his heart almost stopped beating, "Gilbert
Larose! Are you sure?"

"Yes, and he was still there when I left, just after midnight, but I
think his car passed me on the Ipswich road, as I was coming here. He
was doing seventy."

"Gilbert Larose!" ejaculated Mitter, as if he could hardly believe it.
Then he gritted his teeth together. "Yes, I know he's been away from
Carmel Abbey for nearly a fortnight, and yesterday we were rung up from
there with some excuse, that I see now, was to find out where I was."
His voice calmed down to even tones. "But have you any more news?"

"No," came the reply, "but I thought that would give you something to
think about, anyhow," and the speaker slipped away into the darkness.

Mitter drew down the window again, and returned to his bed. But there
was no more sleep for him that night.




CHAPTER XI.--DEADLY NIGHTSHADE


Just before noon upon that day, but one, following the startling
discoveries in Moon Buildings, Larose drove into the grounds of Dunwich
Hall, with the intention of having a talk with its master, or if the
latter were away from home, of getting a word in private with the
butler.

He was thinking that at any rate he would achieve something by his
visit, for if he saw Mitter himself he was hoping he would be able to
determine from Mitter's demeanor whether or not the latter were in some
state of mental anxiety, as undoubtedly he should be, if he were
concerned in the staggering blow that had been dealt to the pseudo Dr.
Smith, the practitioner in diseases of the skin.

Larose himself was still worried there, for although from the testimony
of the butler he realised that by no possibility could Mitter have been
the man on Foulness, or the man with the bag, or Dr. Smith, yet he could
not altogether deny the instinct that continued to hammer so insistently
upon his mind that Mitter was much more deeply involved in the whole
business than, upon the surface, appeared.

The day was fine, but a storm threatening, he parked his car in the
drive, round a side of the house where it would be out of the way of the
strong wind that was blowing in from the sea.

He rang the bell and it was answered by the butler.

"Is Herr Mitter at home?" he asked, regarding the man more interestedly
than he had ever done before.

"Yes, sir," was the reply, "but I think he's in the rose-garden. I'll go
and fetch him at once."

"No, no, I'll go and find him myself," said Larose, and then he lowered
his voice to a whisper and added sharply, "See here, John Dempster, I'm
from the Intelligence Department and I want a word with you. When and
where can I meet you?"

The butler's mouth opened and he looked very disconcerted. "From the
Intelligence people, sir?" he asked hoarsely, and with his voice
shaking.

"Yes, and I want to talk to you about those letters you are sending us,"
said Larose. "When can you arrange it? Tell me, quick."

The man gave a hurried glance over his shoulder. "Hush! hush!" he
whispered, jerking his head in the direction of an opened door in the
lounge, "there's the parlormaid in there." Then he stepped out into the
drive and spoke loudly. "Just across that lawn, sir, along by that big
wall. He was there not five minutes ago." He dropped his voice to a
whisper. "About a mile from here there's a plantation on the Westleton
Road on the left. Drive your car round it and you'll be out of sight.
I'll be there soon after two. I can slip away then, without being
wanted. It'll be my time off."

Larose nodded, and, turning round, proceeded to walk across the lawn to
where he knew the rose-garden was. Passing round the corner, he saw
Mitter standing just by a massive oak door that was set in the great
high wall of the ruined Priory chapel. Matter's face was turned upwards,
and he was seemingly absorbed in contemplation of a large broken arch
upon the top of the wall. Then suddenly he bent down, and placing his
ear against the wall, appeared to be listening intently.

"Good morning, mein Herr!" called out Larose gaily. "You're not thinking
of climbing up here, are you?"

Mitter turned sharply at hearing the voice and then apparently taking in
who it was, his face broke instantly into a warm and friendly smile.

"Good morning, Mr. Larose," he exclaimed heartily, "I am delighted to
see you," and then he laughed as if, Larose thought, he had not a care
in all the world. "No, my friend," he went on, "I am not thinking of
climbing up, and, indeed, I should be very sorry to attempt it." He
pointed up to the ruined arch. "That arch and this wall appear to me to
be both getting very dangerous, and any time when there's a wind
blowing, such as today, I anticipate a catastrophe." He nodded.
"There'll be a tremendous crash one day, and all this mighty masonry
will come toppling down."

"But it's very thick," commented Larose, "and looks pretty solid to me."

"Yes, but the mortar's crumbling badly now. It's stood for eight hundred
years, and that's a long time, you know."

Larose regarded him with great disappointment. There were no signs of
any worry about him, and not only that, but the shape of his face seemed
more different than ever from that of the man they had seen looking up
towards them in the street on Finsbury Pavement.

"I'm sorry," went on Mitter, shaking his head, "that I cannot accept
your kind invitation Mrs. Larose spoke to me about, but I'm getting over
a bad cold and I've got a touch of sciatica, too. Sciatica always
attacks me when I'm a bit out of sorts."

They moved off down the garden, and Mitter pointed out with pride a bed
of beautiful chrysanthemums. The gardener appeared as they were talking,
and touched his tattered cap respectfully to Larose.

"Good morning, Sullivan!" exclaimed the latter, smiling at the dirty and
disreputable looking figure that had shuffled up. "Those cuttings you
took for me came up well."

"Sure, so-or!" said the man in a rich Irish brogue, "I thought they
would." He waved his arm round. "There's too much salt here to get the
best out of things. I always say----"

"Cut Mr. Larose a nice bunch or these blooms," broke in Mitter sharply,
"and bring them up to the house." He turned to Larose. "You'll stop to
lunch, of course, my friend. No, no, I won't take any denial," and then,
when they moved off, he went on with a frown. "I have to put up with a
lot from that man, for he drinks heavily and will never make himself
look respectable. Still, he's a splendid gardener, and can be trusted,
absolutely, when he's sober."

"But I say. I really oughtn't to stay to lunch," frowned Larose. "I've
got to go into Ipswich for some things for the wife and the shopping
will take me a good time."

"Well you're not going until you've had lunch," said Mitter firmly. "I
feel lonely today, and want someone to talk to. Besides"--and he laughed
merrily--"everybody knows you drive like the very devil, so you can
easily pick up the lost time upon the road."

A few minutes later Larose was in a way of being highly amused with his
own thoughts.

He was sitting at lunch with a man whom he knew to be a notorious spy
and whom he hoped to prove to be murderer, as well.

The man had charming manners, was a perfect host and, apparently, there
was nothing he had too good to offer to his guest.

"Now, a slice of turbot," said Mitter, "some cold pheasant and a bit of
ripe Stilton are the best I can give you for a scratch meal." He smiled
and lowered his voice mysteriously. "But we will make up for it in the
wine, for I've had a bottle of '82 Lafitte brought up." He frowned. "I'm
afraid, however, you won't be drinking it quite at its very best, for by
rights it ought to have been out of the cellar a good couple of hours
ago. As you see, I've had to put it before the fire, with the glasses as
well, although, of course, I don't approve of that quick way of bringing
it to its proper temperature."

He turned to Margaret, who was waiting upon them, as Dempster had been
told off, just before the meal, to make some adjustment to the brakes of
one of the cars. "It's all right," he said to her. "I'll serve the wine
myself, when it's ready."

Then when the girl had left the room to bring in the second course, he
remarked in a whisper to Larose. "She's pretty that parlormaid of mine,
isn't she?"

"Beautiful!" nodded Larose. "I don't think I have ever seen a lovelier
girl."

Then when Margaret returned to place the cold pheasant upon the table,
Mitter jumped nimbly to his feet and kneeling down by the fireplace,
proceeded, very carefully, to uncork the bottle of wine. He filled the
glasses where they were and rising with them in his hands, with a care
almost amounting to reverence, placed one before Larose.

"And I do hope you'll like it," he said, anxiously, as if it were a most
serious matter, "for it's a wine I'm very proud of and I've only got a
few bottles left. It has a delicious, but rather peculiar flavor, from
the soil where the grapes are grown."

Larose sipped it with great appreciation and had just started upon a
portion of pheasant when the tinkle of the telephone bell sounded, and
with a frown and gesture of apology, Mitter rose to his feet.

"It's a trunk call from my broker that I've been expecting," he
explained. "I shan't be a minute."

Then directly he had left the room, to the astonishment of Larose, the
parlormaid glided up and proceeded to whisk his half-emptied glass away.

"Excuse me, sir," she said apologetically, "but I see there's some cork
in it," and carrying it off with her, Larose saw her empty it into a
dish upon the sideboard. Then she brought it back and replaced it by his
side.

"But you shouldn't have poured the wine away," said Larose, reprovingly.
"Herr Mitter thinks it much too precious to waste a single drop." Then
seeing the girl looked rather scared, he added smilingly. "Well, he
needn't know about it. We'll consider it as drunk."

Mitter bustled back into the room and started to resume his meal,
enjoining Margaret refill Larose's glass, which he had at once noticed
was empty.

The lunch was quite an animated one, and they discussed literature, art
and flowers. Then Larose brought up the subject of invisible aeroplanes,
hoping to observe some unusual interest in the expression upon the face
of his host.

And he was certainly not disappointed there, for Mitter at once became
most enthusiastic.

"A wonderful invention," he exclaimed, "for it is peace we want! All the
world is sick of war and anything that tends to make nations chary of
starting trouble, is the best thing for everyone."

Larose felt a sudden chill run down his spine, and with difficulty he
suppressed a shudder. With what deadly purpose must Mitter be endowed,
he thought, that, with such deceit and guilt upon his mind he could yet
talk in so friendly a manner!

Soon after lunch Larose said he must be going, and declining to allow
his host to come beyond the front door because it had started to spit
with rain, he made his way round the drive to where he had left his car.

"Yes," he nodded, "he's of the most dangerous type imaginable, and
behind that pleasant, smiling face, lies a savagery and ruthlessness
that will stick at nothing."

Jumping quickly into his car to get out of the rain his eyes fell
suddenly upon a wrench, on the driving seat, that he at once recognised
as belonging to his own kit of tools.

"Hullo! hullo!" he exclaimed wonderingly, "now how the devil did that
get here? I'm sure I never took it out."

For a few moments he thought hard and then he shook his head. "No, and
I'll swear it wasn't at the back of the seat, either, when I left home.
I should have felt it at once." He shook his head again. "But there it
must have been, although it seems very funny."

He started the engine and letting in the clutch drove slowly out of the
grounds and through the village. Then when he was over the rise and had
left the village behind a sudden thought struck him and he drew in a
sharp breath.

"Gosh!" he exclaimed in some consternation, "what if someone's been
monkeying with the car and forgot to put the wrench back! I'll get out
and have a look round," but then seeing the plantation of trees only a
little farther on, he thought better of it. "No, I'll do it when I
stop," he added, and he drove on until he had turned off the main road
and was hidden by the trees from all passers-by.

The butler had not arrived as yet at the rendezvous, and so, in a rather
half-hearted way and now inclined to think it was all waste of time.
Larose proceeded to look over the car.

For a couple of minutes or so he found nothing wrong, but then, bending
down under the car, and giving a good pull and twist to the rod that
connected the steering crank to the arms of the stub axle--to his horror
the rod came away in his hand! The protecting cap had been taken off,
the safety pin removed, then the cap replaced and all the steering of
the car had been left dependent upon one slender thread of the screw!

"Good God!" he gasped, and his eyes almost started from his head. "Then
Mitter knows!" The full devilry of it came home to him, and he gasped
again. "Any second that rod might have dropped off, and what would have
happened if I had been going at speed?"

He took out his handkerchief and wiped the perspiration from his
forehead. "Yes, Mitter did it," he murmured brokenly, "in those few
minutes he left me, just before lunch. I thought when he came back that
his eyes were avoiding mine!"

Then, recovering his equanimity, he smiled with resignation as if it
were all in the day's work. So he took out his tools and was just
proceeding to jack up the car when the butler appeared round the corner
of the plantation upon a bicycle.

"Sorry I'm late, sir," panted the man, "but I couldn't get away before
without being noticed."

"Sure no one followed you?" asked Larose with a frown.

"Quite, sir," replied Dempster. "I came by a bridle path across the
fields," and then, glancing down at the car, he asked, "What's the
trouble, sir?"

"Have a look," replied Larose grimly, "and tell me exactly what you make
of it."

The man bent down, and, lifting the disengaged end of the rod, regarded
it very curiously. Then he twisted the cap with his fingers, and after a
very scared look at Larose, stood up with the cap in his hand.

"It must have been almost off!" he exclaimed hoarsely. "It could only
have been hanging by one thread, and there is no cotter pin there."

"Exactly," nodded Larose, "and so some kind person intended I should
have an accident"--he nodded a second time--"and a very terrible one if
I had been going at any good pace." He snapped out his next words--"Now,
who did it? It was done at your place."

The butler looked more scared than ever. "But are you sure sir?" he
began.

"Sure, man!" snarled Larose. "Why I was averaging forty all the way here
and nothing happened!" He calmed down and spoke very quietly. "Now what
do you make of it, Dempster?"

But the butler could hazard no opinion. He was dumbfounded in his
surprise and consternation.

"If I thought your precious master had any idea why I'd come here
today," went on Larose, "then I could understand it at once, for he left
me alone in the library a long five minutes before lunch, and he had
ample time to do it then." He picked up a wrench. "But come on now, help
me to put it right. You must not be away too long."

The steering was quickly put in proper order again, and then, to make
things sure, they expeditiously went over all other vital parts of the
car. But apparently nothing had been tampered with anywhere else.

"Well," said Larose at last, "we'll have to leave this as a mystery to
be solved later on. We can't give any more thought to it now." He looked
intently at the butler. "Now, you've been in the army, haven't you? You
were a non-commissioned officer once?"

"Yes, sir," was the reply, "sergeant in the East Kents."

"Then you will realise the importance of the work that has been
entrusted to you and how much may depend upon the reports you send to
Major Rankin? You have fully taken in that your master is a secret agent
for a foreign country, in other words that he is a spy?"

"Yes, sir, and I'm very sorry to know it, for I couldn't wish for a
better master. He's very kind to us all."

"Never mind about that," said Larose. "That counts for nothing. The more
pleasant and agreeable a spy, the more dangerous he is to the country he
is spying upon. Now, tell me of whom the household at the Hall consists.
How many of you are there?"

"My wife, sir, she's the cook, myself, the parlormaid who waited upon
you at lunch. Jane the housemaid, Sullivan the gardener, and the master
himself. Sullivan doesn't really belong to the household, for he lives
in that cottage by the Priory wall and does everything on his own. He
never comes into the house."

"And you do everything for Herr Mitter? Do you valet for him?"

"Oh, no sir. In fact, I attend to him very little myself. Margaret, the
parlormaid, does far more for him than I do. You see, I was engaged as a
chauffeur mechanic as well as a butler, and I've two cars to attend to,
and they occupy a lot of my time. Some days, indeed, I'm hardly in the
house at all, being all day at work in the garage."

"And are you positive," said Larose impressively, "that Herr Mitter was
not absent from here at any time upon those five days, three weeks ago,
about which we have been enquiring so particularly?"

The butler nodded emphatically. "Quite positive, sir. He did not use any
of his cars upon those five days, and in fact I don't think he left the
house at all. He was hard at work in his studio."

"And you saw and spoke to him up on each of those five days?" went on
Larose.

The butler hesitated. "N-o, sir, I'm not quite sure about that. As I
say, he was very busy in his studio that week, and when he's painting he
sticks hard at it and we see very little of him."

"Then you did not see and speak to him every day during that week?"
rapped out Larose very sharply.

The butler hesitated again. "Well, if I didn't actually speak to him, I
certainly saw him, but I took some of his meals into the studio, where
he always has them when he's busy." He went on quickly. "You see, sir,
the master is rather reserved and eccentric at all times, but we have
accustomed ourselves to his ways. Some days he's moody and hardly speaks
a word to anyone. Then if we even say good morning to him, he may not
answer, and we are not a bit surprised. In fact, many days he's queer in
the morning, and doesn't seem to be able to brighten up until the
evening. Then he answers, and is quite a genial, pleasant man again.
Very different, indeed, to when he's got his painting brush in his
hand."

"Then you say you didn't take in all his meals to him on those
particular days we have been asking you about," remarked Larose
thoughtfully.

"No, sir, Margaret waited upon him very much more than I did, but then
that's quite in the ordinary way, for she's far more than a parlormaid
in the house. She types the master's letters for him, and he is training
her to be his secretary." The butler nodded. "Margaret is a very
superior young person, sir, and we don't really know who she is. No
friends or relations ever come to see her, and she never gets any
letters at all. She's very reserved, too, with us all, and talks more to
the master than to anyone in the kitchen."

"Ho! ho!" exclaimed Larose, elevating his eyebrows, "then you think----"

"No, no, sir," interrupted the butler instantly, and quick to follow the
other's thoughts, "there's nothing like that about Margaret or the
master either. Besides"--and he smiled knowingly--"Margaret has a
gentleman friend now."

"Who's he?" asked Larose curiously. "One of the villagers here?"

"Oh! no, sir," replied the butler, looking quite horrified, "she would
never take up with anyone like that. She's well educated and speaks
French and German." He gave a sly smile. "This gentleman she is going
out with is an officer, and a friend of the master. He's Lieutenant
Fortescue and he's stationed at Colchester."

"But surely he doesn't come up to the house for her?" asked Larose
looking very puzzled.

"No, his car waits for her outside the village and we only happen to
know whose it is because the constable here recognised it. It's a light
grey one and rather conspicuous."

"And then who is this Lieutenant Fortescue?" asked Larose.

"A young gentleman, very well connected, sir. His uncle is Sir Newman
Fortescue and his cousin, I believe, is Wing-Commander Fortescue,
attached, they do say, to those new invisible aeroplanes somewhere."

Larose felt a feeling of great exultation thrill through him. At last he
had got hold of something! Mitter's intimate association with this girl,
the girl's association with Lieutenant Fortescue, and Fortescue's
relationship to the wing-commander of one of the squadrons of the
invisible aeroplanes!

"And is Herr Mitter aware that this girl is going out with the
lieutenant?" he asked after a moment.

"Oh! I should think so, sir, or he wouldn't be letting her come home so
late. She was at some dance the night before last and didn't get home
until 4 o'clock in the morning. I heard her come in."

"And how long has this been going on?"

"Not very long, sir, for it's only within the last few weeks that she's
been buying new frocks and things." The butler nodded solemnly. "She
looks a real princess when she's in evening dress, a very beautiful
young woman."

Larose changed the conversation. "Well, tell me," he asked, "does your
master eat chocolate at any time?"

"Not when he's at home," replied Dempster, "but I've heard him tell
people that he eats it quite a lot when he's away. He's had
food-poisoning once, and he never likes to have meals at strange
restaurants, if he can avoid it."

A short silence followed, and then Larose asked. "Well, is there nothing
more you can tell me?"

"One thing, sir, and I was going to mention it." He lowered his voice to
a whisper. "The night before last, someone came to the master's bedroom
window in the middle of the night, and about two minutes' conversation
took place. I had come down to get some brandy for my wife who wasn't
well, and, passing the master's rooms, I heard the window go up. I
stopped to listen, and heard low voices, for a very short time. Then the
window was pulled down again very quietly."

"Hum! and how has Herr Mitter been lately?" asked Larose when he had
apparently digested this piece of information.

"These last two days very irritable, sir. You brightened him up a lot
just now, for yesterday and this morning he was very glum."

They talked on for a few minutes, and then Larose said
thoughtfully:--"Then, as I understand it, upon all those days about
which we particularly want to know, your master has been painting in his
studio. He has not been leading his usual life, you have not seen him
about the grounds, and he has hardly spoken a word to you!"

The butter considered and then replied:--"Yes, sir, that is so."

"And this Sullivan, this gardener, you say," went on Larose, "never
comes into the house, and I understand is sometimes drunk for days and
days on end."

The butler nodded. "Yes, sir, that is exactly it."

Larose considered for a minute. "And what time do you all generally go
to bed? I don't mean your master, but you and your wife and the maids?"

"Ten o'clock, sir. We all go up to bed then."

"The parlormaid, too?"

"Yes, sir, unless she is doing any typing for the master."

"Well, now, you listen to me," said Larose, regarding the butler very
intently. "On your master's desk just now, I saw an invitation to the
mayoral banquet at Ipswich to-morrow night. Do you know if he's going?"

"Yes, sir. I heard him arranging on the phone to pick up Dr. Stedman, of
Wickham Market, and give him a lift. They are both going."

"Good!" said Larose. "Then to-morrow night at exactly half-past ten, you
are to let me into the house, so that I can have a look over your
master's study and his studio. I want to run my eye over his things
there."

The butler looked very frightened. "Oh, but, sir, it'll be very risky.
Suppose the master comes home early!"

"Then I'll get out of his bedroom window," replied Larose. "I shall hear
him come in. No, no, you can go off to bed directly you've let me into
the house. I shan't want any more help from you at all."

But Dempster was most unwilling, and it was only after Larose had spoken
very sternly and reminded him of his oath to the Intelligence Department
that he reluctantly agreed. It was arranged then that Larose should come
in through the kitchen window.

They parted a few minutes later and Larose turned on to the main road.
As he drove along he tried to sum up all he had learnt from the butler,
but somehow he did not seem to be able to think coherently, and in a few
minutes, to his dismay, he began to feel quite out of sorts. The light
hurt his eyes, his heart began to palpitate quickly and he felt giddy
and altogether very queer.

Arriving at the little town of Halesworth and feeling no better, he drew
his car in to the side of the street and switched off the engine.

"Gosh! but I feel crook!" he exclaimed. "I think I'll get a nip of
brandy."

Then just as he was alighting with unsteady steps from the car, he saw a
tall professional-looking man about to turn into the house right in
front of him, and at the same moment his eyes fell upon a brass-plate
upon the wall. 'Dr. Browning.'

"That's a bit of luck!" he exclaimed dizzily, and before the
professional looking man had time to shut the door, he accosted him.
"Are you Dr. Browning?" he asked, breathlessly, and upon the man nodding
in affirmation, he added. "Can I speak to you for a few minutes,
please?"

The doctor led the way into his little surgery and motioned Larose to a
chair. "Well what's the trouble?" he asked.

Larose explained what had happened and the doctor at once laid his
fingers upon his pulse.

"But I'm beginning to feel better now," said Larose, drawing in a deep
breath. "I think it's passing off. My heart's not going so quickly now."

"You've been taking some drug," said the doctor sharply. "The pupils of
your eyes are very dilated."

"No," replied Larose, with a shake of his head. "I haven't," and then a
rush of thoughts surging through him, and not anxious that the doctor
should get the idea that someone had attempted to poison him, he added
quickly. "Only a tonic that my medical man has been prescribing for me."

"Well, what's been the matter with you?" asked the doctor, and Larose
replied with the name of the first ailment that came into his mind.
"Sciatica."

The doctor nodded smilingly. "Yes, and of course he's been giving you
belladonna," he said, "and you are either very intolerant to it, or else
you've taken too big a dose. When did you take it last?"

With a dreadful pang, Larose thought of the claret he had had at lunch
and the way Mitter had juggled with the wine glasses by the fire.

"About one o'clock," he replied, "when I was having my meal."

"When you were having your meal!" frowned the doctor. "What a funny time
to be taking it!" He nodded again. "Well, that accounts for so long a
time having elapsed before you began to feel its ill-effects. You took
it on a full stomach."

He laid his fingers again upon Larose's pulse. "Yes, it seems to be
passing off now, and you'll probably be right again in a few minutes."

"But did I give myself nearly a poisonous dose?" asked Larose.

The doctor shook his head. "No, far from that. The symptoms would have
been much more pronounced if you had. You took just enough to make you
feel bad and obscure your vision a bit." He looked grave. "But you might
have had a very bad accident with the attack coming on when you were
driving a car."

"And if I had taken double the quantity I did," asked Larose,
remembering with great thankfulness the cork in the first glass of wine
that he only half drank, "would that have been dangerous?"

The doctor hesitated. "N-o-o," he replied, "it wouldn't have actually
poisoned you, but it would certainly have made you feel much worse for
much longer. You would not have died."

He gave Larose a stiff dose of sal volatile and making him wait half an
hour, at last pronounced him quite all right and fit to resume his
journey.

"Whew!" whistled Larose when he had left the little town behind him,
"but aren't things clear now? Somehow Mitter has found out that I'm
after him, and a good and quick workman, he gets to business at once.
That matter of the belladonna gives him away completely and there's not
the slightest doubt now it was he who tampered with the car. Then, as I
thought, there's not the slightest doubt either that Mitter was mixed up
in some way with both Moon Buildings and Foulness Island."

He frowned. "And, although it's not nice to acknowledge, I must
nevertheless accept it as an unpleasant fact that when anything goes
wrong with his plans his resources are such that he is able to find out
at once how they have come to be upset."

His thoughts ran on. "Now about that very good-looking parlormaid of
his, and there can be no doubt she and Mitter are on very friendly
terms. Dempster's a bit of an innocent, and I should say she's Mitter's
mistr----" he smiled, "well, at any rate he's got a hold upon her and
they're working together hand and glove. She's a mystery to the other
servants and no one knows where she comes from. I shouldn't wonder if
she's not a foreigner, too, although she doesn't look one and her
English is perfect. Of course Mitter has set her on to that young
Fortescue, and I should say the information as to where that glass is
being made came, in the first instance, from the boy." He nodded grimly.
"At any rate, I'll have a talk with that young man to-morrow and just
find out exactly what he's told the girl."

He frowned. "Now, another thing--when did Mitter come to find out that I
was mixed up in this, to the extent that he thought it necessary to do
me some grievous harm? He cannot possibly have found out that I have
been working down at Southend, for the whole time I have been in some
sort of disguise and, unless he were actually suspicious and brought in
close contact with me, he certainly would not have seen through that
disguise. Now I wonder"--his thoughts were very puzzled ones--"I wonder
what information that visitor brought to him when he tapped upon his
window in the middle of the night. Dempster says they only spoke
together for two minutes and that undoubtedly means the news the man did
bring was snappy and probably the stating only of one single fact. Now
could it have had anything to do with me, for that night was the only
time I had gone to Whitehall in my own car and as my proper self, just
as I am?"

He switched his thoughts into another direction and frowned again. "Now
there's something very curious about Mitter's painting days. He seems to
have always been in his studio when, as I have been imagining, he's been
somewhere else. He's moody then, too, and speaks to no one, and always
at those times it is that girl that is in closest contact with him." He
nodded. "Yes, the girl looms very large in the picture then, this girl
who is acting as his secretary, who is in his confidence, and of whom, I
am sure, he has made another spy!"

He drove on for a long time without, apparently, being able to give
shape to his thoughts, and then, suddenly, he started, so much so that
he made a wide swerve in the steering of the car, and had to pull the
steering wheel round fiercely to get it straight again.

Then the puzzled expression upon his face was all swept away and he
threw back his head and burst into a hearty laugh, a loud exultant
laugh, as if he were delighted about something, the laugh of a man who
was on excellent terms with himself.

"Of course! of course!" he exclaimed, drawing in his breath in big
gulps. "I see it all now! Everything's clear at last!" He could hardly
contain himself in his excitement. "MITTER HAS GOT SOMEONE WHO DOUBLES
FOR HIM, AND THE MAN WHO DOES THE PAINTING IS NOT MITTER AT ALL!"

It was some moments before he could breathe evenly again and then he
went on. "Yes, yes, that's it! Mitter away in London, at Southend and on
Foulness, and the painter working for his very life in the studio of
Dunwich Hall! The painter, a man who looks something like Mitter, at any
rate, a man of his build; wearing Mitter's painting overalls; not taking
any notice of the butler and probably keeping his back to him all the
time! Yes, yes, and waited upon by this parlormaid, who is far more than
a parlormaid and deep in all the secrets of the house! Oh! how
everything can be explained now, and no wonder, when he spoke on the
phone to the wife he assumed that hoarse unrecognisable voice!"

He was so thrilled with his discovery that the speedometer touched
seventy before he became aware of the speed at which he was travelling.

The following morning he was early in Colchester and Lieutenant
Fortescue was pointed out to him just as the latter was coming off
parade.

He approached the young fellow and was starting to introduce himself
when Fortescue exclaimed--

"Oh! I know you already, Mr. Larose. I met you at Herr Mitter's a few
months ago. I was with Captain Johnson and we were talking about
coursing. Herr Mitter had just been attending a two days' meeting at
Brandon then."

"Of course, of course, I remember quite well," smiled Larose. His face
became very serious. "Now I want to ask you a few questions. Where can
we go?"

Fortescue took him round to his rooms and Larose at once came straight
to the point.

"It's about Herr Mitter that I want to speak, at first," he said. He
regarded him intently. "Now does the Herr ever ask you questions about
the services?"

Fortescue laughed. "I shouldn't be such a goat as to tell him anything
if he did," he replied. His face sobered down and he asked rather
sharply. "But what's that to do with you, Mr. Larose?"

"Only that I'm working for the Intelligence Department," said Larose
quietly, and he at once proceeded to show him a letter of authority with
which he had been provided by Sir Herbert Carnaby.

"Quite O.K.," nodded the lieutenant. He looked puzzled. "But why are you
asking me about Herr Mitter?"

"Because he's an agent for a foreign power," snapped Larose, "and,
somehow, he's been getting hold of very valuable and secret
information."

"Mitter a spy!" gasped Fortescue incredulously. "You say Mitter's a
spy!"

"Yes, and a very dangerous one," nodded Larose, "perhaps the most
dangerous there is in the country at the present time."

"Good God!" exclaimed Fortescue, "but what a startling piece of news!"
He shook his head. "No, he's never tried to find out anything from me."

"Well, has anyone else tried?" asked Larose very sharply, and then
seeing the young man looking more puzzled than ever, he went on quickly,
"But there, I won't beat about the bush. I want to know about that young
lady you are friendly with up at Dunwich Hall."

The boy's mouth opened in surprise and then, instantly, he got furiously
red. "What do you mean?" he asked angrily. "What are my private affairs
to do with you?"

"Come, come," said Larose quietly, "my meaning must be perfectly clear.
Has Herr Mitter's parlormaid been pumping you about anything?"

Fortescue appeared to contain himself with an effort. "No," he replied
curtly, "she has not."

Larose spoke gently and most apologetically. "Really, Mr. Fortescue, I'm
very sorry, indeed, to have to bring the girl up at all, but when you
think for a moment, you must see I'm only doing what is perfectly right.
We're watching Herr Mitter as a dangerous man and Miss Advent, as his
secretary, must be in his confidence to some extent. So what is more
natural than that we should suspect she's working with him."

"But I'll swear she's not," exclaimed the boy vehemently. "She's a
thoroughly good girl."

"She's a very beautiful one," said Larose, "and looks to me anything but
a maid out in service. That makes me the more suspicious." He spoke as
kindly as he could. "Now tell me truthfully, has she ever asked you any
questions about the army, navy, or air force?"

"No," replied Fortescue sharply. "I've already told you she hasn't."

"She's never mentioned them to you?" persisted Larose.

The boy had settled down now. "Never," he replied. "I swear to you she
hasn't." He shrugged his shoulders. "Of course, I've spoken to her about
army life and how all my people have been soldiers, but beyond that
nothing in that way has ever passed between us. She's never been a bit
curious."

"She's never asked you where that invisible glass is being made?" went
on Larose.

"Certainly not, and if she had I shouldn't have been able to tell her,
for I don't know myself."

"And she's never mentioned your cousin, Wing-Commander Fortescue to
you?"

The boy looked scornful and shook his head. "I don't know that she is
even aware that he exists," he replied. He smiled for the first time.
"When we've been out together, Mr. Larose, we've had other things to
talk about, as perhaps you will remember, having once been young
yourself."

Larose smiled back. "Certainly," he agreed. "I know all about that." He
made a gesture of regret. "As I say, she's a very lovely girl and we're
very sorry she's mixed up with a man like Mitter."

Fortescue shook his head. "Oh, she's not mixed up with him," he said
emphatically. "She'll know nothing of the work he's doing. He's just
been kind to her and letting her attend to some of his correspondence,
so that she'd be able to learn things and be in a position to better
herself." He nodded. "She's leaving Dunwich Hall any week, now."

"Oh!" exclaimed Larose, "she's told you that. Where's she going, do you
know?"

The boy got very red again. "She's going to London. She's going to a
training college in the city. As a matter of fact,--er---er," he
hesitated and then blurted out with some defiance--"as a matter of fact,
Mr. Larose, next year she's going to become my wife."

"Your wife!" exclaimed Larose, with an effort restraining his surprise.
"Then you are engaged to her?"

"It is understood," nodded Fortescue. He hesitated again and then spoke
confidingly. "Now listen, Mr. Larose. You look a gentleman and I've
always heard you are one, so I'll take you frankly into my confidence.
Miss Advent is no ordinary parlormaid. She's a perfect little lady.
She's well educated, and it's just misfortune that she is where she is."
He held himself proudly. "Mine is no dishonorable intrigue, and I'm not
just 'carrying on' with her. I'm going to do the right thing by her, and
so I've found a place where she can start training to become a
journalist. Then, when we marry, I shan't be marrying someone who is in
service." He nodded vigorously. "Now you know the exact position."

Larose smiled. "And I'm sure you'll be very proud of her." Then his face
clouded, and he asked hesitatingly, "But who are her people? Do you know
them?"

The boy at once looked embarrassed, and he began to get red again.
"Well, I suppose I may as well tell you everything," he said
reluctantly. He regarded Larose intently. "Yes, I feel sure I can trust
you." He spoke very slowly. "She's a foundling, sir. Twenty two years
ago, upon a November the 29th, she was left on the doorstep of the
Foundling Hospital. It was the night of the first Sunday in Advent, and
that's why they gave her the surname of Advent. The other name,
Margaret, was pinned to her baby clothes."

A quarter of an hour later and Larose was hastening with all speed along
the London road. He looked very thoughtful, and his face was puckered in
a frown.

"If only for that boy's sake, I'd like to believe it," he murmured, "and
yet with all that beautiful face of hers. I think--I'm very much afraid
she's deceiving him." He sighed. "In all history, down all the ages,
women have made fools and playthings of the wisest of men." He grimmaced
to himself. "Why, I think that pretty Margaret could even thrill me, if
we were thrown much together."

Arriving at the Foundling Hospital, however, and when after some
explanations and formalities he was allowed access to the records of the
institution, his confident assurance as to the deceit of Margaret Advent
received a rude shock.

A baby girl had been left there on the night of November 29 twenty-two
years previously, and among other things she had been described as
having grey eyes and being of a refined appearance. Also the name
Margaret had been written upon a piece of paper pinned to the baby's
clothes.

"Hum!" remarked Larose as he left the building, "then I must somewhat
revise my conceptions of that young woman." He shook his head
doubtfully. "Still, there is nothing more dangerous than a lie, which is
half the truth, and after all the very attractive Miss Margaret may be
trying to kill two birds with one stone, serving Mitter and advancing
herself at the same time."

That night, a few minutes before ten, he crept into the grounds of
Dunwich Hall, with the half formed idea in his mind that he might in
some way enlist the services of the gardener, Sullivan. He remembered he
had tipped the man well when the latter had provided the rose-cuttings
for him, and the fellow had seemed very grateful, so it was just
possible he might be of use now. Still, he knew, he, Larose, must be
very careful, for Sullivan appeared to be a very garrulous individual
and hardly seemed a man he would care to trust too much.

The gardener's cottage was at the extreme corner of the grounds and
abutted on the high wall of the ruined Priory, indeed, two sides of the
cottage were formed by part or the ruins themselves.

Arriving at the cottage, Larose could just see a thin streak of light
above the one closely curtained window. He put his ear to the door but
could hear nothing. Then suddenly his nostrils were assailed with the
strong smell of cigar smoke.

"Hullo! Hullo!" he murmured, "this chap smokes cigars"--he sniffed
hard--"and pretty good ones at that!" He looked up at the window. "Now
if I could get a ladder anywhere, I might have a squint inside."

There was a misty moon showing and by its light he tip-toed about fifty
yards away to a low shed, where lying against it to his great joy, he
saw a ladder about eight feet in length.

With infinite precautions that he should make no sound, he carried it
across and propped it above the cottage window. Then he mounted, as
silent at a shadow. The streak of light came level with his eyes and he
could see into the one room of which the cottage consisted.

Then he almost fell off the ladder in his astonishment, for with his
first glance he thought it was Mitter himself that he saw!

A man was sitting in an armchair before a good fire, smoking a cigar and
with a book in his hand. His face was half turned towards the window
and, sideways it had the lines and facial angle of the master of Dunwich
Hall.

With a stealthy movement and very slowly, so that he should not disturb
the equilibrium of the ladder, Larose drew a small pair of opera glasses
from his pocket and focused them upon the man's face.

"By Jupiter!" he breathed in great excitement, "it's not Mitter, but
it's the double that I was sure existed! The nose and the mouth are
different, but the shape of the head is the same! Mitter and he are of
the same blood! They are related to one another!"

Then he stared and stared, until the strain made his eyes ache. The man
was wearing a good-class tweed jacket with trousers to match, he had on
a clean sports shirt and his feet were thrust into comfortable slippers.

"And it's the gardener!" Larose ejaculated breathlessly. "That's his wig
of red hair on the table! Yes, yes, he's Sullivan, the Irishman with the
Irish brogue, but no longer the unkempt creature with his muddied face
and filthy clothes!" He nodded vigorously. "Oh! but these men do their
work well!"

He swept his glasses round the room, noting the big gardening boots that
were standing by the wall, the ragged gardening jacket that was hanging
upon a peg, and the tattered hat that had been flung upon the floor.

Tempting fortune no longer, he descended the ladder, with the same
stealthy footsteps as before, and replaced it where he had found it.

"Now for Mitter's room," he whispered, "and it wants only three minutes
to the half hour."

Approaching close to the Hall, he crouched down by the kitchen window,
devoutly hoping that Dempster would not fail him or be late.

But he need not have been anxious there, for the butler was quite
punctual, and to the stroke of the half-hour from the big clock in the
lounge hall, admitted Larose through the window, then pulled it softly
down.

"Now, in case I don't see you again," whispered Larose, and he gripped
the butler tightly by the arm, "the next time Herr Mitter starts
painting be sure you ring up your man in Saxmundham without a moment's
delay and tell him to phone me at Carmel Abbey instantly. It's most
important. Do you understand?"

"Yes, sir," replied the butler, very shakily. "I'll see that you are
informed at once."

They crept through the darkness until Larose was standing just inside
Mitter's study door. "And you are sure they are all in bed?" he
whispered. "You are certain that parlormaid is in her room?"

"Quite certain, sir," whispered back Dempster hoarsely. "Margaret went
upstairs more than an hour ago." He appeared very nervy. "But whatever
you do, sir, don't draw the curtains to switch on the lights, for if the
master comes home before we expect he will see they are on, long before
you are able to hear the car. In fact, you may not hear the car at all,
for he may free-wheel right down into the garage with the engine
switched off. He often does that so that he shan't disturb any of us
when we are asleep. He's very considerate."

"All right, all right," assured Larose. "There's enough moon for me and
I've got a torch. Now, you go off to bed and I'll let myself out when
I've finished. I shan't be very long," and the butler, as if glad to
wash his hands of the whole business, faded away in the darkness.

Larose took a quick glance round the study. The fire was still burning,
although it was very low, but the moon was shining through the window
and made everything visible, quite plainly.

He walked over to the desk, and with no delay began to try the drawers,
but, finding them all unlocked, did not think it worth while to go
through their contents. Then before going into the bedroom, the door of
which he had noticed was standing open, he lifted up his head and let
his eyes rove round to see if there might be anything else of interest
to investigate.

Then suddenly he drew a sharp breath, his limbs became rigid, and he
stood as immoveable as a graven image--for upon a large settee, not half
a dozen paces from him, he saw the recumbent form of Margaret Advent!

The moon shone full upon her, her eyes were closed, and he could tell by
the even rise and fall of her bosom that she was asleep. One arm was
outstretched and in the hand was a sheaf of papers.

Larose swore softly but deeply in his dismay, realising that he had not
noticed her when he had first come into the room, because the back of
the settee was half turned towards the study door.

Then instantly he ducked under the desk, for he had seen the girl was
stirring and passing a hand across her face. He watched her
breathlessly, with his head almost at a level with the floor.

She opened her eyes, brushed the hair off her forehead, yawned,
stretched herself and then finally sat up.

She took a glance at the watch upon her wrist, and then noticing the
dying fire, rose hurriedly to put on some more coal.

With her back now towards him, Larose seized the opportunity and glided
like a shadow through the open door into the adjoining bedroom.

But he was filled with consternation, wondering, if the girl continued
to remain in the study, how on earth he was going to get out of the
house again before Mitter returned. It looked as if Margaret were
waiting up for her master.

He thought instantly of the bedroom window, but he realised quite well
he could not raise the sash without her becoming aware of it, for apart
from any noise he might make, he was sure the ensuing rush of air
through the open bedroom door would immediately attract her attention.

But more dismay followed, for Margaret had only just finished stoking up
the fire, when there came the sound of the opening of the front door.
Margaret then immediately switched on the study lights and a few seconds
later Mitter came into the room. "Hullo!" he exclaimed, "so you've
waited up for me!"

"Yes," replied the girl. "I've typed those letters and thought you would
want them given to the postman to-morrow, first thing."

Then Mitter spoke sharply, and on the instant his words made Larose's
heart beat quicker than ever.

"But haven't you got hold of Dempster's letter today?" he asked. "He
must be writing just the same!"

Larose did not hear what answer the girl made, for as he was crouching
down in the darkness at the far end of the bedroom, he saw her stretch
out a white arm, the light from the study was cut off, and he heard the
sharp click of the bedroom door as it was shut to. After that their
voices became a low murmur.

Larose gasped. "So Mitter knows he is being watched! He knows Dempster
is working for the Intelligence, and sending letters to them! Good God!
what fools we've been!"

Now it was characteristic of the nature of Larose that in all his life's
work in the tracking down of crime he always took each happening exactly
as it came, and never permitted the knowledge of the narrowness of one
escape to deter him from embarking upon a further adventure that might
entail equal, or possibly, greater risk. So now his pulses having
quietened down and his equanimity being in part restored, he made no
attempt to get away from Dunwich Hall with all speed, but instead
proceeded, most methodically to see if there was anything in Mitter's
bedroom that would be of interest to him.

With the quietness of a cat be tiptoed round the room, looking into the
chest of drawers, opening a big cupboard, and going through the pockets
of the coats hanging in the wardrobe. But he found nothing to reward him
until he noticed, lying upon a chair a suit of clothes which be realised
in a flash Herr Mitter must have discarded only a few hours previously,
when he had changed into his evening clothes for the mayoral dinner.

Quickly he began to search through the pockets, and then in the breast
one of the jacket he came upon four letters. Three of them appeared to
be of no importance, but the fourth made his eyes sparkle, and his heart
jump, for it was addressed to 'Dr. Smith.'

With no hesitation, in the twinkling of an eye, he transferred it to his
own pocket, and then with one last look round the room, lifted the sash
of the window very softly and stepped into the garden outside.

He was feeling quite satisfied with his night's work.




CHAPTER XII.--THE KIDNAPPING OF THE PROFESSOR


For nearly a fortnight a watch had been kept upon the house of Dr.
Fergus in Trumpington road, Cambridge, and the doctor's young wife,
radiant in the possession of her first baby, would have gone sick with
terror had she but read the thoughts of the pale-faced and
shabby-looking man, from whom, one day, she purchased a pair of
boot-laces at the back door.

The man did not appear to her to be possessed of much intelligence, but
for all that he was as sharp as a weasel and nothing of any moment
escaped his eyes.

He noted that quite a pile of dead leaves had drifted up against the
garage door, suggesting to him that it had not been opened for some
time, that there were no wheel-marks of any car upon the drive, and that
there was no kennel in the yard, or sign that any dog was kept in the
house.

Then, quite assured in this last respect, it became his habit to creep
into the garden every night, just after dark, peer under the chinks of
the blinds and listen at the kitchen window. By these means he learnt
that three maid servants were kept, that the cook swore and was an
inveterate smoker of cigarettes, that all the three girls made bets upon
horses, and that there was no man about the house. He noted also that
there was a row of empty beer bottles, from the condition of their
labels of not too ancient date, and he saw that this row was not added
to at any time during the period of his vigil. So he argued, and quite
rightly, too, that the master of the house had not been home for some
little time.

He soon came to know all the ways of the house; how the cat was put out
every night, punctually at ten o'clock; how all the lights on the ground
floor were extinguished at the same time; and how, finally, all the
house was in complete darkness within half an hour later.

His mission was to report, instantly, when the absent doctor returned,
and as he had been instructed the latter would most certainly arrive in
a car, by night, it was at night time only that he kept his vigil, and
then, only until about one o'clock in the morning.

He had no idea for what purpose he had been instructed to keep this
watch and he did not much care. He had no idea, either, as to the
identity or place of residence of his employer. All he knew was, that he
was being well-paid for the work by a certain party who had befriended
him once, when about a year or so previously he had had come out of
prison, and whom he was accustomed to meet, upon receiving a letter
intimating that his services were required, at a little coffee shop in
Islington.

When he did any regular work, and it was not his habit to over-exert
himself at any time, he hawked little trifles from door to door, but he
was well-known to the metropolitan police as a pick-pocket and in his
short life, he was only twenty-two, had several times enjoyed the
hospitality of His Majesty.

The vigil proceeded, without any unusual happening, for twelve days.
Then upon the night of the thirteenth, shortly after seven o'clock, the
watcher became suddenly of opinion that his work was almost at an end,
for through the side of the kitchen blind, he saw one of the maids start
peeling potatoes, and the cook put a joint of meat into a baking tin.

"Hullo! Hullo!" he exclaimed with some animation. "High jinks tonight!
Saddle of mutton, for the missis, instead of a tray with biscuits and
milk! Then the boss is coming home at last!" He nodded vigorously. "I
thought those tarts looked togged up and had got clean caps on for once.
Generally, they don't seem too tidy to me."

So in a few minutes he shifted his point of observation into a garden
upon the other side of the road, where also, he had made it his business
to find out, no dog was kept.

Then a few minutes before nine he had the satisfaction of seeing a big
car come driving up at a good speed, and a tall man of slight physique
jump quickly out almost before it had stopped. Then all in a few seconds
the car was turned round and driven rapidly away, the front door of the
house was pulled open sharply, a joyous cry came from a woman, with
white and gleaming arms, whose figure was framed in the doorway, and the
new arrival rushing up the drive, swept the woman off her feet as he
proceeded to embrace her.

Then the hall door was banged to.

"A sure thing," remarked the watcher as be peered up and down the road,
to make certain it was deserted and then let himself quickly through the
garden gate. "That's the hubby, without any doubt!"

So by the following afternoon he had returned to London, and was handing
in an advertisement over the counter of 'The Times' office, intimating
to all and sundry that a reward of 5 would be given to anyone returning
a Fox Terrier who had strayed from his home in Kensington Gardens about
9 o'clock upon the previous night.

The work of the watcher was done, and he was free to return again to his
hawking and picking pockets.

Now, in all his daring and well-planned undertakings on behalf of his
country, as he always prided himself, Mitter always played for absolute
security, and as far as it was practical, allotted each particular piece
of work to only one man who, as it were, carried on by himself in a
water-tight compartment.

It was only very rarely that two of his agents were allowed to become
acquainted with each other, and not one single one of them, beyond the
precincts of Dunwich Hall, was aware of the real personality of the man
they were working for, or where he actually lived. Upon occasions there
was the utmost subtlety, too, in the manner in which he received the
information they had been sent out to get hold of.

So upon the morning of the day following upon the night entry of Larose
through the kitchen window of the Hall, when the usual morning papers
arrived, Mitter turned anxiously to scan down the 'Lost and Found'
columns of 'The Times,' and his pulses quickened and his breath came a
little quicker as his eyes fell upon the advertisement referring to the
fox terrier who was missing from Kensington Gardens.

Then, less than an hour following, Larose received through the channel
he had arranged, the information that Herr Mitter had been seized
suddenly with another painting urge, and had shut himself up in his
studio.

Later in the day, too, the nice mannered and charitably disposed Mr.
Howard reappeared in Cambridge, and put up, as before, at the Bull
Hotel, arriving there just in time for lunch. During the afternoon he
amused himself by sauntering round the town, but five o'clock saw him
ringing the bell of the house in Trumpington road, where the rector of
St. Jude's lived, next door to the residence of the well-known Dr.
Fergus. He carried a parcel under his arm.

He was fortunate in finding that the reverend gentleman was at home, and
being ushered into the latter's presence, with a few grateful words for
the courtesy he had received upon the occasion of his last visit to
Cambridge, he presented to him a beautiful photograph of the reredos of
his church.

The old clergyman was delighted, and an animated conversation followed.
Then the rector asked Mr. Howard if he were making a long stay in the
town this time.

"No, only for a few days," was the reply. "I'm just going to look over
some of the other churches and a few of the colleges and, perhaps, if I
can manage it, get a round or two of golf."

"Oh! yes, you must visit our golf course," agreed the rector at once. "I
don't golf myself, but I am told it is the best course in the country."
He seemed most anxious to do anything he could for his visitor, and went
on: "Now, do you know any of the members?"

"I'm not sure until I've been up there," replied Mr. Howard. "Then if I
don't see anybody I know, I was wondering----"

"Of course, of course," broke in the Rector, anticipating Mr. Howard's
next words. "I shall be very delighted, I am sure," he smiled--"and you
couldn't have come to a better man, for my nephew, Dr. Rayner, happens
to be on the committee. I'll introduce you to him." He looked at his
watch. "Now, what about coming straightaway, now. I've got to go to the
post office, and it won't be a hundred yards out of my way to take you
to my nephew's place. He'll have probably just come in now from his
rounds."

So a few minutes later saw the two passing through the garden of a
trim-looking little house just off the main road, and with a brass plate
upon the garden gate.

"I think we'll go through to the surgery," said the Rector, "and then we
shan't trouble anyone to come and answer the bell," and Mr. Howard noted
with appreciation the tidiness and spick and span appearance of the
little waiting-room and the consulting room that led out from it.

"Very clever and up-to-date young fellow, my nephew," whispered the
Rector. "He's getting on well, and will soon be moving into a larger
house."

They found the doctor at home, and an introduction being effected, the
latter arranged at once to drive the very presentable Mr. Howard to the
golf course, the next day at 3 o'clock.

"I get a couple of hours away from the practice whenever I can," he
smiled. "You see it gives the patients some chance of getting well."

So the next day Mitter, for of course, he was the Mr. Howard, was made a
temporary member of the golf club, and proceeded to keep a sharp
look-out for any appearance of either of the two men he wanted.

He had seen Professor Carling at a public lecture when he had last been
in Cambridge, and was sure that he would recognise Dr. Fergus both from
Tom Skelton's description and also from a photograph of him that he had
seen in one of the doctor's scientific books in the Public library.

Besides, if he met Professor Carling on the golf course, he was sure
from all he had heard of their friendship, that he would be seeing Dr.
Fergus along with him.

And everything happened exactly as he had expected, for coming back into
the club house just as it was beginning to get dark, he espied Professor
Carling among a laughing group seated at the far end of the lounge and
opposite to him a tall red-haired man with a big nose.

There was no mistake about it and he told himself he would have
recognised Dr. Fergus instantly even if he had not found the latter in
the company of his friend.

He moved as in a dream, as Dr. Rayner piloted him straight towards the
men he was so interested in, and then when he sank down in a comfortable
chair and the doctor was ordering drinks, he found himself not a dozen
paces from his intended quarry, and able to hear distinctly everything
that was being said by them.

Naturally, the conversation was all about golf and everyone was chipping
Dr. Fergus that he had made such a poor show that afternoon.

"Damn it, man," called out a fat and red-faced individual whom someone
had just addressed as Spooner, "but you can't putt for nuts, now. You
never were much good, but all the alcohol you've been imbibing has
completely shaken your nerve and you're a wreck, even to what you were."

"I'll play you for a fiver," grinned Dr. Fergus, "any day, any hour you
like."

"Wouldn't take your money," retorted Spooner emphatically. "It'd be like
robbing a little child." He nodded towards the professor. "And you've
upset his game, too, by your bad example. I've never seen so many rotten
shots as this afternoon."

Another man broke in. "Let's take them both on for half a dollar,
Spooner. They ought to be able to afford that."

"Good! Luscombe," exclaimed Dr. Fergus, "we agree." He winked at the
professor, "and as we are the challenged parties, we have the choice of
weapons, time and place." He glanced in mock severity at Spooner. "So we
appoint to-morrow, here, and at 8.30 sharp."

"Great Jehosophat!" groaned Spooner. "8.30 on mornings like these! Why,
man, I don't get up till nine o'clock!"

"Your habits, sir," commented the doctor coldly, "are of no concern to
us. You have insulted us, and, accordingly, you must abide by the
consequences." He thumped upon the arm of his chair. "Tomorrow, at 8.30,
and if you and Luscombe don't show up to the minute, sharp, we shall
know you are both afraid and the penalty will be degradation in the eyes
of all here and a dinner at the 'Bull' for six on Saturday night."

"All right!" laughed Luscombe, "we'll be here." He turned to Spooner.
"So, I'll call for you, my boy, at 8.15 sharp, and bring you along in my
car." He nodded grimly. "And if you're not dressed when I appear before
your house, you'll come as you are. Understand?"

Spooner grunted stertorously. "But it'll kill me!" he groaned. "The
morning air will be deadly to my constitution!"

"And mind," warned Dr. Fergus, "if you are not here to the minute, we
shall take it you are not coming. We shan't wait."

"All right," said Luscombe frowningly, "but if we don't turn up you will
understand a tragedy has happened, for then"--he glanced at the stout
man and spoke very solemnly--"I shall have murdered the wretched
creature here."

And all the while Mitter had been listening to their banter in a perfect
fever of excitement, hardly hearing a word of what Dr. Rayner had been
saying to him.

The very opportunity be had been hoping for! But he couldn't deal with
the four of them. He would only be having two men to help him and there
must be no bloodshed and no signs left to show that the doctor and the
professor had been forcibly taken away! The whole success of the
undertaking depended upon there being no immediate pursuit, and when the
hue and cry was raised there must be no point for the pursuers to start
off from!

His pulses quietened down. Then these two friends of theirs must be
prevented from coming to the golf course on the morrow. That was all. It
must be managed somehow.

Arriving back in the town Mitter's first act was to consult a telephone
directory and he was much heartened to see that there was apparently,
only one householder of the name of Luscombe in Cambridge.

So about twenty minutes later, a quick walk had brought him to the
vicinity of that gentleman's house and he arrived there just in time to
see Luscombe himself turn into his drive and be vociferously welcomed by
a big Irish terrier.

No one passing at the time, Mitter stopped, and peering over the low
wall was able to make out, by the light in the road, all that followed.

Luscombe drove his car into the garage and switching on the light there,
proceeded to empty the contents of two petrol tins into the tank. Then
after taking a quick look round at his tyres, and adding some water to
the radiator, he switched off the lights again and having pulled to the
garage door, returned up the drive to shut the gates. Then he let
himself into the house, leaving the dog, however, to remain outside, and
the latter, after sniffing about for a minute or two, betook himself to
a large kennel that was close by the garage, and lay down.

Mitter did some quick thinking. It was in his mind to put the car out of
action, somehow, so that it would not start the next morning, but the
presence of the Irish terrier presented a great difficulty.

Then suddenly he looked at his watch and his face breaking into a broad
smile, he set off at a quick pace back towards the town.

His walk this time was very short, and five minutes brought him to the
vicinity of Dr. Rayner's house.

"Ten minutes past six," he muttered, "and as his surgery hours do not
commence until half past, I may just have time, before any patients
begin to arrive."

He noticed there was a car parked in the road before the house and he at
once recognised it was the doctor's and the one that had taken them to
the golf course that afternoon. Then he was upon the point of turning
into the garden, when a thought struck him, and he slowed down and then
stopped dead.

He waited a few moments for a woman with a little child to pass, and
then approaching the car, opened one of the doors and bending down
inside, struck a match, evidently to see if he could find something.

But his scrutiny was very short and, apparently disappointed, he
quickly, but very softly, closed the door, and turning into the garden,
proceeded to walk up the path.

He did not approach the front door of the house, but turned off towards
the surgery, through which he had entered the house the previous
afternoon, along with the doctor's reverend uncle.

There were no lights up in the surgery, but trying the handle of the
door, he found it unlocked, and so, making no sound, he passed quickly
inside. He closed the door very softly behind him and then for a long
moment stood listening. Then finding everything perfectly quiet, his
movements became quick and business-like. He struck a match to get his
bearings, but then blowing it out again at once, he glided across the
waiting room, keeping one hand upon the wall so that he should not bump
into any of the furniture.

He gained the farther room where the doctor attended to his patients,
and then struck another match, this time, however, keeping it alight
until it had burnt almost to his fingers. He was looking for some
cupboard or some drawers where the doctor would be keeping his drugs,
for he wanted morphia tablets to dope Luscombe's dog.

He struck another match and then immediately gave a deep and satisfied
"A-ah!" for he had seen a professional looking black bag upon a chair
just by the desk.

In two seconds he had laid his hands upon the bag and was tip-toeing to
the window, where he saw there would be just light enough from the stars
to go through its content.

He soon found what he wanted, a small leather hypodermic case, and
opening it carefully, he stirred among a number of little phials to find
one that contained morphia.

Ah! There it was--with the label 'Morphine sulphate,  grain.' He
slipped it into his waistcoat pocket, and closing and replacing the
leather case, returned the bag to where he had found it. Then he
tip-toed back into the waiting room and, his eyes now more accustomed to
the light, had no need to strike another match.

He had almost reached the door leading into the garden when happening to
glance through the window, the blind of which had not been drawn--his
blood froze in horror as he saw a policeman striding resolutely up the
garden path and making straight for the surgery door.

For one moment he stood as if paralysed, but then quickly recovering his
wits, he darted over to the wall and switched on the lights. Then he
dashed his hat down upon the table, picked up a magazine from among a
number there and flinging himself back into a chair, stretched out his
legs and apparently commenced to read with great intentness.

The door opened and the police-man stepped into the room. He was a good
looking young fellow with a very intelligent face. Mitter just looked up
casually for a quick moment, and then let his eyes drop again upon his
magazine.

"What are you doing here?" asked the policeman, sharply.

Mitter looked with a start now, and regarded the policeman with a very
astonished look. For a moment he did not speak and then he asked
quietly. "What did you mean?"

"What are you doing in this room?" repeated the policeman, and there was
no softening in the sternness of his tone.

Mitter seemed the more surprised. "Waiting to see the doctor, of
course," he replied, and then added as if he were annoyed at the
question being put. "What do you want to know for?"

"Are you a patient?" asked the policeman, ignoring Mitter's question and
with his eyes boring like gimlets.

Mitter seemed amused. "No, if you must know, I am not. I am a friend."

For answer, the policeman closed the door in a most decisive manner and
then proceeded to press his finger on a bell-push that he saw upon the
wall. He kept his finger on the bell, too, and a loud, insistent burr
came echoing from another part of the house.

Immediately then there was the sound of hurried footsteps, the door
leading from the hall into the consulting-room burst open and Dr. Rayner
ran into the waiting room. From the movements of his jaw he had
evidently been disturbed in the middle of his meal.

"Know this man, sir?" jerked out the young policeman, pointing to the
now broadly-smiling Mitter.

"Yes," exclaimed the doctor in great surprise. "Is he hurt? Has he met
with an accident?" and then noting the expression upon Mitter's face, he
added smilingly:--"He doesn't look like it!"

The policeman's face fell. "Then you do know him? He's a friend of
yours?" he asked.

"Certainly," replied the doctor. "We've been golfing together this
afternoon." He eyed the policeman frowningly. "But what's this all
about?"

The policeman looked sulky. "This gent was acting very suspiciously. I
was watching over across the road and he didn't know I was there. First,
he came up to your car and stood waiting about until a woman with a
child had passed. Then, all of a sudden, he jumped up to the car and
opened one of the doors. Then I saw he was striking a match. Then he
closed the door quietly--much too quietly, I thought--and crept up the
pathway here. Then he came inside and I saw he was striking matches
again. I was coming after him pretty quick, but he switched on the light
just before I got here."

"Well, I don't understand why you----" began the very puzzled doctor.

"But I think I'd better explain, Dr. Rayner," interrupted Mitter
hastily, and with a very apologetic expression upon his face. "It's
really all my fault, and I realise now that the constable here was
perfectly justified in becoming suspicious. What happened was this. I
lost my reading glasses somewhere this afternoon, and was coming along
in the hope that I might perhaps have dropped them in the car and you
had found them. Then when I saw your car outside, I thought I would look
there before coming in." He laughed. "In here, I couldn't find the
switch at first, and that's why the officer saw me striking matches
again. I intended to wait until the surgery opened so as not to disturb
you at your dinner."

The constable went out, somewhat mollified by the five shillings Mitter
had given him, and a minute or two later Mitter himself took his
departure.

"By Jove!" he whispered, as he turned into the road, "that was a near
thing." He nodded. "Still, my good fortune is holding!"

His next move was to visit a butcher and buy a pound of steak. Then in
the privacy of his bedroom at the hotel, he made up succulent little
baits, each one containing a grain of morphia and tied round with a wisp
of cotton that he had drawn out from one of the sheets upon the bed.

So it happened that about half-past eight that night Mr. Teddy
Luscombe's Irish terrier was disturbed from his slumbers by the rattling
of a stone upon the cement drive, and with a low growl he came out of
his kennel to see what it meant. He had been digesting what he
considered a very inadequate meal, for there was a wide difference of
opinion between him and his master as to what constituted a good dinner
for a dog of his size.

He padded out on to the drive, and immediately another stone came
rattling, this time a little nearer to the gate. Then he saw something
white bobbing about near the foot of the wall, as Mitter jigged a ball
of rolled up newspaper at the end of a piece of string.

He accelerated his pace, and with a snappy bark made a vicious plunge at
the paper, but it just eluded him as it was drawn up quickly over the
wall. Then, as he was growling deeply, a piece of meat fell right under
his nose. He stopped growling to sniff hard, and then, no further noises
ensuing, and there being no reappearance of the roll of paper, after
well nosing the piece of meat for a few more seconds, he picked it up,
champed his jaws half a dozen times, and swallowed it.

"No, no, my good dog," murmured Mitter, as he started to walk briskly up
the road, "one's quite enough for you, and you mustn't be made sick. Now
I'll give you an hour, and then you'll be fast asleep."

So, just an hour later, undeterred by the dog, who was now sleeping
heavily, Mitter let himself into the garage, and by the light of a small
torch, and with a wrench and a screwdriver that he had brought with him,
proceeded methodically to put the car out of action. He made no gross
interference with anything, but, taking out three of the sparking plugs
bent their points so wide apart that the engine would miss badly when
the next attempt was made to start it.

Then closing to the garage door very softly, he next proceeded to climb
the wall at one end of the garden where he had seen he could reach the
telephone wires running from the house. Then he manipulated the wires,
until one of them was crossing over the other, by that means effectually
putting the telephone out of action until the wires were disengaged
again.

Then he returned to the hotel and announcing that he had unexpectedly
been called away, paid his account and drove off in his car.

Not long after eleven found him in a low, rambling house upon the banks
of a small mere, a little less than sixty miles away, and in earnest
conversation with two men. These latter had only known one another for a
few days and neither of them were acquainted with the other's real name.
As Mitter had been advised, they had each of them in turn been warned,
for their own security, to disclose as little as possible about
themselves and as they were quite aware they were to be involved in some
highly unlawful undertaking, they had seen the expediency of the advice,
and so no confidences had been exchanged during the time they had been
waiting for their unknown employer to appear.

They were both strong, burly men, one of them looking like a pugilist,
which indeed he had been once, and the other might have worked on the
dockside. They knew they were going to be well paid for their services,
and as 'habituals' among the criminal classes, they were not particular
as to what they would be given to do. They had never gone a hundred
yards from the house since they had arrived, and their sole occupation,
apart from their meals and sleeping, had been fishing from the bank of
the mere.

The conversation now between the three was long and earnest, and
although the house was isolated and very lonely, it was carried on all
the time in low whispering tones. Silence and night are always the
fitting environment for unlawful deeds.

       *       *       *       *       *

Dr. Benjamin Fergus had arrived home for his little holiday in a very
joyous frame of mind, and with all his thirty-four years of age and his
scientific attainments, he was like a big schoolboy in his happiness. He
danced round many times with his young wife, jigged the baby up and down
until it was sick, and wished the postman, whom he heard had just got
married, a long family and plenty of twins.

He lost no time in going round to see his great friend, Professor
Carling, and his spirits were exuberant, there, too.

"Everything going splendidly on the island, my boy!" he exclaimed.
"Things couldn't be better, and we never get a bad mix now. The stuff
comes out O.K. and A1 every time. No, we've had no more shocks since
that sentry was killed, but, of course, they found out nothing. The
Intelligence people sent down an extra special johnny to investigate. No
one knows who he was, but we called him Mr. X, and he was a very decent
fellow. He dined with us all the night after he arrived, and was about
the most entertaining chap I've ever met. He told all of us our
characters, read our family histories from our clothes, and showed us
how to cheat at cards and pick pockets."

"Was he a detective?" asked the professor, looking very curious.

"Might have been, but he was certainly not an ordinary one. He was well
dressed, and very well informed upon every subject we discussed. The old
colonel said afterwards that he was disguised, and he was sure his
moustache was not a real one, because he sipped so delicately at
everything he had to drink." The doctor slapped his friend upon the
back. "But now, my lad, what about some golf this afternoon? Good! Then
I'll come round for you after lunch."

So that afternoon and the two succeeding ones, were spent upon the golf
course, and the third afternoon upon returning, when it was dark, to the
club-house, over whiskies and sodas and much laughter and badinage, the
challenge of the light-hearted Teddy Luscombe was accepted for the match
upon the morrow at 8.30.

The following morning, sharp to the time specified, the two friends were
upon the course waiting for their adversaries to appear.

"They are not coming, of course," said Dr. Fergus, when ten minutes had
passed, and there was no sign of any car upon the road. "I thought that
lazy beggar Spooner wouldn't turn up. He's no life in him until he's had
a spot or two. Come on, we won't wait any longer. We'll get on with our
game."

So declining to take any caddies with them, they started off, and did
not encounter a single person until they had dropped down in the little
hollow where the seventh putting green was situated, and then three men
came in sight over the rise and began to walk in their direction.

The arrivals appeared to be men whose occupation had to do with
telephone or telegraph repairs, for one of them carried a coil of
shining copper wire and the other two had big tool bags slung over their
shoulders.

Approaching close to the two friends, one of the men, a big burly
fellow, touched his cap and asked hoarsely of Dr. Fergus, "Which is the
way to the club-house, please, guv'nor. We've got a job on there," and
then when the doctor turned and pointed out the direction, the burly
man's arm shot out like lightning and the doctor received a vicious blow
upon the angle of his jaw, that knocked him unconscious to the ground.

At the same moment the small-framed professor was seized roughly round
the waist by a second man, jerked off his feet, and a large horny hand
was placed over his mouth.

"You shout," enjoined a gruff voice fiercely, "and I'll throttle you!
Keep still and you'll come to no harm," and at the same time the
professor's arms were pulled sharply behind him and he heard the click
of handcuffs, as they were locked upon his wrists.

It was all over in less than half a minute and then the professor,
realising that it was quite hopeless to struggle or shout, found himself
flung over his captor's shoulder and being hurried across to a large car
that was waiting on the road about a couple of hundred yards away.
Finally, he was bumped down upon the floor at the back of the car, a
length of rope was coiled round his legs, and he was again warned to
keep quiet.

A minute or so later, Dr. Fergus, still unconscious, was carried up and
laid down beside him. Then a short delay occurred while one of the men
ran back and collected the golf clubs of the two friends and then the
car was started and quickly accelerated to a good pace.

A man who appeared to be the leader, and who had got a scrubby beard and
was wearing dark glasses, bent over the doctor and placed a folded rug
under his head. "You hit him pretty hard, didn't you?" he growled in an
angry tone to someone over his shoulder.

"No," came a voice from the front seat, "just a touch. He'll be all
right in a few minutes. But I had to make quite sure."

Then the man who had first spoken, produced a bandage and tied it over
the professor's eyes. "No, don't waste your breath in talking," he said.
"We'll explain everything presently."

Then it seemed to the professor that a very long time passed, until the
car stopped, and he was lifted once again and carried for about two
hundred yards. Then he knew he was being taken into a house, and finally
he felt himself lowered on to a bed. He was told not to move, the
speaker adding that he would return again in a few minutes.

But Professor Carling had no inclination to move, for terror and
consternation had, all suddenly, gripped him and he was filled with the
most dreadful thoughts. What was the meaning of the outrage? he was
asking himself, and the only answer he could give covered him in a cold
sweat from head to foot.

He and Dr. Fergus had been the discoverers of that invisible glass and
save them, it would have been well nigh impossible to find in all
England, two men who knew the secret, at one and the same time, in the
same place together.

What if it were an attempt to get hold of the formula from them, who, of
all others, were best able to give it?

He gritted his teeth together and some strength seemed to come back to
his shaking limbs. Well, they would never get it from him, he resolved,
and if he knew anything of the character of his friend, the latter, too,
would die rather than speak a word.

In the meantime Mitter, for one of the men had been he, with a very
troubled expression upon his face, was endeavoring to restore to
consciousness the unfortunate doctor who had been knocked down by
ex-bruiser of Shoreditch, Mr. Samuel Dukes.

But the redoubtable Sam had struck well and truly, and his confident
prediction that his victim would be all right again in a few minutes was
not being fulfilled.

"You fool! I tell you, you struck him too hard," exclaimed Mitter. "He's
not a rough lot like yourself and it may be days before he comes to!"

"Not a bit of it," retorted Dukes sullenly, as he flapped vigorously at
the doctor's face with a wet towel. "I tell you I didn't hit at all
hard. It's only just that the gent is soft from an easy life and too
much good living."

Making no reply, Mitter left him at it and made his way to the adjoining
room where the professor had been taken. He closed the door very
carefully behind him, and, approaching the bed, first changed the
handcuffs upon the professors wrists, over from back to front, and then
removed the bandage from the professor's eyes.

"Sit up," he said, as he sat himself down upon the single chair the room
contained, a few paces distance from the bed.

The professor, with a scowl, shuffled over to the edge of the bed and
did as he was requested. Then he eyed Mitter intently, his face,
however, betraying none of the fears and suspicion that he felt.

"Now you listen to me," said Mitter, "and I'll come straight to the
point." He paused impressively for a moment. "You're Professor Carling,
and your friend is Dr. Fergus. Well, we've brought you both here to
obtain the formula of that new glass that's being made and that you
invented. No, no," he went on sternly, because the professor had at once
shaken his head, "the understanding between us must be quite clear, for
the sooner you realise your exact position, the better it will be for
you."

"You damned ruffian!" burst out the professor furiously. "I know nothing
about the glass, nor does Dr. Fergus either. You're mistaken there."

Mitter shook his head. "Don't be untruthful, Professor," he said
quietly, "and don't work yourself into a rage. We know all about you
both, everything, and we've known it for a long time, and have only been
waiting to act until we could get hold of both of you together. You and
Dr. Fergus are the co-inventors of the material and its discovery was
made in your laboratory in Cambridge. Dr. Fergus is now directing its
manufacture upon Foulness Island, and has been so doing since March
last. He came home only the day before yesterday, upon a few days'
leave." He smiled. "This is no haphazard affair, my friend, but has been
most carefully prepared for. So----"

"But you won't get anything out of us," broke in the professor fiercely,
and no longer attempting any denials. "We're not that sort of men and so
you've had all your trouble for nothing." He snarled. "Good God, this
means 20 years' imprisonment for you." A thought seemed suddenly to
strike him and he asked with blazing eves, "Who are you?"

"A very humble person," smiled Mitter, "but who I am is neither here nor
there." He went on. "So the position is this. We have you both in our
power and are resolved that neither of you shall be given your liberty
until the formula has been obtained from each one of you in turn. There
will be no chance of your deceiving us, for you and your friend are
going to be kept apart, and we shall be sure then that you are giving
accurate information, because the two formulas will have to be exactly
the same." He nodded. "You grasp that--you have taken it in?"

"I'll give you no information," exclaimed the professor scornfully. "I'd
rather die first."

"It is not exactly a question of dying, Professor," said Mitter quietly,
"for we don't anticipate for a moment you will force us to that." He
shrugged his shoulders. "Of course we realise that by kidnapping you
like this we have exposed ourselves to very severe punishment if we are
caught, and therefore"--his voice hardened--"you will understand we
shall not shrink at the most extreme measures if they become necessary."
He shook his head smilingly. "But we don't want you to die, or, indeed,
suffer in any way. We just want you to be sensible men, and, seeing that
you have no choice in the matter, to give us the information without any
bother." He spoke quite pleasantly. "Then I promise you you shall be set
at liberty within two hours, so that you can be back at your homes again
tonight." He looked amused. "And if you both keep your mouths shut, no
one need even know that you have told anything."

"You devil!" exclaimed the Professor, "do you think Englishmen would do
a thing like that?"

"Husbands and fathers might," smiled Mitter--he nodded
significantly--"that is, if they want to see those dear to them, again."

"And if we don't do as you want us to," asked the Professor in
amazement, "do you really mean to tell me you will kill us, that you
threaten us with murder, in fact?"

Mitter spoke as if they were discussing a very ordinary matter. "Not
straightaway," he replied quietly--he lowered his voice almost to a
whisper, and eyed the professor very intently--"for we should try other
measures, first, to bring you to your senses."

The professor gasped and then burst out incredulously:--

"You would torture us, you mean, you damned brute?"

Mitter shrugged his shoulders. "This is no child's game," he said
sternly. "We are in deadly earnest, I say, and I tell you frankly there
are no lengths we are not prepared to go if you compel us to do so." He
shook his head frowningly. "But there, we'll not talk of that, for I am
sure you will not be so foolish as to make us resort to such extremes."
He rose up from his chair. "But now, I'll leave you for an hour and you
can think it over. I'm going to have a talk with your friend." He
pointed to the window, which was heavily barred. "But don't think for a
moment that you can play us any tricks. You see you can't get away and
there is no possibility, either, of anyone finding out where you are
hidden. You are miles away from anywhere." He smiled a very pleasant
smile. "We've been a long while arranging for this, as I say, and have
provided for everything."

Returning to the other room, Mitter found there was no improvement in
the doctor's condition, for the latter was still unconscious, with a
very faint pulse and almost imperceptible breathing.

Dukes had stopped flapping with the towel, and was now regarding the
unconscious man with a decidedly uneasy expression upon his face.

"Cripes! if he croaks!" he exclaimed as Mitter entered. "It'll be a bad
thing for all of us."

"Oh! he's not going to die," said Mitter testily, "and you ought to know
that well enough. The annoying thing is he may remain like this for days
and not be able to speak."

"If I knocked a chap out in a fight," went on Dukes meditatively, "it
never troubled me a bit, but a gent like this, who I say has been living
soft"--he nodded gloomily--"well, I don't like that bluish look about
his face."

"Well, you go outside," said Mitter, jerking his head in the direction
of the door. "You're no good here now, and the only thing we can do is
to wait. He may come to any minute and then we can all clear out
tonight." Then seeing that Dukes seemed in no way reassured, he added,
"I know enough about doctoring to be quite certain he's not badly hurt."

The day passed very slowly, with the doctor still unconscious and every
hour increasing Mitter's annoyance. He had hoped to have got everything
finished that day and, with the formula in his possession, to have left
the house along with his two confederates directly it was dark.

He had been intending to drug the kidnapped men heavily, and leave them
to come to and get away as best they could. He had reckoned no stir
would be made about them in Cambridge until long after nightfall, for he
had learnt that when upon the golf course they often played there all
day.

So he had been expecting to have been back again in Dunwich long before
any hue and cry had started.

But now all his arrangements were upset and when darkness fell and there
was no change in the doctor's condition, his annoyance first deepened
into anxiety and then into real consternation.

He had not visited the professor again, deeming it best to allow the
latter to work himself into such a state of worry and apprehension that
his will would be so weakened he would give in without any trouble.

The night passed with no one in the house getting much sleep, indeed,
the professor never closed his eyes. Mitter dozed fitfully in an
armchair. Dukes smoked pipe after pipe, wakeful and full of fears,
cursing all the time that any sum of money had brought him into such an
adventure, and Fletcher, the second man, realising how disturbed the
others had become, was too uneasy in his mind to sleep more than a few
minutes at a time.

The next morning the prospect seemed a little brighter for, although
still unconscious, the doctor's pulse was stronger and his breathing
decidedly better.

Then, too, Mitter took heart at the thought that if the best detective
talent in the kingdom had been called in, there was not one clue they
could pick up, and they would be absolutely fogged where to start off
from. Yes, he told himself, he was in absolute security, even if he had
to wait a week for the doctor to become conscious.

And so the second day wore on, and night fell again, without much change
in the doctor's condition. He still remained unconscious.




CHAPTER XIII.--THE HEATED IRON


Now Mitter had made a grave miscalculation when he had so comforted
himself with the thought that no anxiety would be felt about the
kidnapped men, until long after darkness had set in.

On the contrary, they were being looked for by half-past nine that same
morning, by eleven o'clock the local police had been called in, by
twelve Scotland Yard had been communicated with, and by two Gilbert
Larose had come tearing into Cambridge at a whirlwind speed.

It had all happened in this way.

Colonel Bevan, of the Air Force, had had an appointment with Dr. Fergus,
in Trumpington road at eleven o'clock that morning, but arriving at the
doctor's house an hour earlier, he had learnt that the latter was
golfing with Professor Carling. Thereupon, being solicitous of
completing his business with the doctor as speedily as possible, because
an unexpected and important matter had cropped up in town, and he wanted
to be back there in the early afternoon, he had followed after him, in
the expectation that they could have their conversation straight away.

It fitted in well, too, that he would catch Professor Carling at the
same time, because the latter's opinion upon the matter they were going
to discuss was desired also.

Then upon arriving at the golf course he was at once told an
extraordinary and, to him, rather disquieting tale.

It appeared that Dr. Fergus and the professor had arrived there, in the
former's car, exactly at half past eight, and ten minutes later,
declining to take any caddie with them, as was their invariable custom
when they played alone, had started out upon a game. Then, at half past
nine, two friends of theirs, a Mr. Edward Luscombe and a Captain
Spooner, had appeared upon the scene. These last gentlemen should have
been upon the course at the same time as the other two, to keep an
appointment for a foursome, but Mr. Luscombe had had some trouble with
his car, and hence the tardiness of their arrival.

Mr. Luscombe and Captain Spooner, being so long behind their time, had
not expected that the doctor and the professor would be waiting for
them, but as they realised some explanation and apology were needed for
their failure to keep the appointment, they had proceeded, with all
haste, to cut across the course to pick up their friends. Also, as the
promised game was only to have been a friendly one, they were expecting
to probably join in when they overtook them.

But they could see no sign of them anywhere, and then one thing which
struck them as very extraordinary, was that about twenty yards from the
seventh green, which lay in a dip of the course, they came upon a ball
already teed up upon the teeing ground, and, from all appearances, the
ball had but very recently been placed there.

Colonel Bevan heard all this in the club house to which the two late
arrivals but a few minutes before had returned to ascertain if by any
chance their friends were refreshing themselves inside.

"And they can't have gone away from here, sir," exclaimed Captain
Spooner to the Colonel in great perplexity, "for the doctor's car is
still there," and he pointed to a smart little two-seater parked close
by.

"And yet they can't be here," grunted Luscombe, "for all the fairways
are in full view and we can pick out everyone upon the course, except
when they're down by this seventh green."

Then when, at his request, Colonel Bevan was taken over to the seventh
green and he saw how secluded it was and how near too to the main road,
he became most apprehensive at once and, returning to the clubhouse with
no delay, put through a call to the Superintendent of the Cambridge
police.

"You see, gentlemen," he exclaimed to some of the members of the club
who were standing round, "it may turn out to be a very serious matter,
as Dr. Fergus is engaged upon highly important research work for the
Government, and there are not a few people"--he nodded
significantly--"who might wish him ill."

The Superintendent, along with two plainclothes men, was upon the scene
in a very few minutes, and Colonel Bevan drawing him to one side, very
quickly made known to him who he was, and the significance of the two
men's disappearance.

"From a Government point of view," he added, "there are, at the present
moment, no two men of greater importance in all the country, for they
are in possession of secrets that are being closely guarded and are
known only to a very few."

The Superintendent was impressed, and another visit was at once paid to
the seventh green.

"You see they got as far as here," explained Captain Spooner, who
already was regarding himself as a sleuth of the first water, "and no
farther, as evidenced by the ball left upon the tee. Something happened
here to stop their game."

"But how do you know the particular ball you found belonged to one of
them?" asked the Superintendent sharply.

"Because they were the first to start playing this morning," replied
Spooner, "and then we got to the green before any other players did. You
must understand that when we were looking for them, and did not see them
anywhere on the fairways, we made direct here, because, as you have
seen, it is the only place on the whole course where players are out of
sight. Besides," he added triumphantly, "the ball was quite dry when I
picked it up, and if it had been here all night it would have been wet
from the dew."

A minute search was made over the ground in very direction, and
especially towards where the road lay, but nothing unusual was noticed,
and as there had been no rain for some days, no footprints could be
picked out.

"And that's the road leading to Newmarket," nodded the Superintendent to
Colonel Bevan, "and hundreds of cars pass here during the day. So if
there was any abduction with violence, there's just a chance someone may
have seen something suspicious, and we shall get information when their
disappearance is put upon the air."

"Oh! but surely in that case you would have heard of it by now,
Superintendent," suggested Spooner. He shook his head judicially. "No,
I'm afraid there's no hope there, for although, as you say, during the
day hundreds of cars do pass along this road, when playing here I've
often noticed that it is deserted for quite a long period at a time."

Returning once again to the club-house, Colonel Bevan was now in such a
state of apprehension that he immediately rang up and got in touch with
Mr. Grant. The latter at once took the gravest view of the situation,
and with no delay, proceeded to put in motion all the machinery at his
command.

So it came about that a few minutes after two o'clock, Larose drove up
to the club-house and learnt from the secretary of the club that an
enquiry was being held in the committee room at that very moment.

"Who's there?" he asked sharply, after disclosing who he was and
explaining that he was acting for the Intelligence Department in
Whitehall.

"Superintendent Woods of Cambridge," replied the secretary, "and Chief
Inspectors Carter and Stone from Scotland Yard. They've just been
questioning our Captain Spooner and Mr. Luscombe."

"All right," nodded Larose. "I know the inspectors, and please take me
in at once." He smiled. "They won't mind being interrupted and will be
quite pleased to see me."

And certainly the inspectors showed all signs of pleasure when Larose
was ushered into the room. They appeared to be a very ill-assorted
couple, for Carter was tall, thin and lanky, with a rather severe case
of countenance, looking not unlike a nonconformist minister in mufti,
whereas his colleague, Stone, while nearly as tall, was so stout of
figure that his real height was not apparent. Stone, too, had a jovial,
humorous face, with a large mouth, and eyes seemingly as big as those of
an ox.

They both greeted Larose in the most friendly way, and Stone at once
introduced him to the Cambridge superintendent.

"We were told you were coming down," he boomed, with his eyes twinkling,
"and I suppose we shall have to put up with it." He turned smilingly to
the superintendent. "This gentleman, sir, has got the evil eye and is
supposed to be able to see through a brick wall. He was hard up and
needy like me once, but now he's got pots of money to throw about, and
only gets poor devils hanged for the sport of seeing them take the
drop."

Chief-Inspector Carter explained quickly to Larose all that had
happened, and gave it as his opinion that the two missing men had been
kidnapped.

"Of course they have," agreed Larose instantly, "and the whole matter
has been most carefully prepared for." He nodded to both Carter and
Stone in turn. "This is, of course, the beginning of a trail to you, but
to me it is only the continuation of one I have been following up for
weeks." He glanced towards some notes that he saw Carter had been
taking. "Now what do you make from what this Captain Spooner and Mr.
Luscombe have been telling you?"

Inspector Carter spoke quite confidently. "That the kidnappers were
expecting the doctor and the professor, together with their two friends,
to be along here early this morning, and accordingly made all
preparations to seize them at the only place upon the golf course where
they knew they would be out of sight of the clubhouse."

"There are always a few caddies waiting there," supplemented Stone, "in
fact, this morning there were seven of them, when the two men arrived."

"Therefore," went on Carter, "two things stand out quite clearly; the
first--that the kidnappers have a confederate somewhere in the club, who
has been standing by to report all movements of the wanted men, and the
second--that the kidnapping gang must be a fairly large one, as they
were undoubtedly prepared to have to lay violent hands upon four men."

"The latter supposition appears pretty obvious, Mr. Larose," explained
Stone, "for it was by chance only, that Messrs. Spooner and Luscombe
were not here, as arranged, this morning. If Mr. Luscombe had not had
unexpected trouble in getting his car to start, both he and the captain
would have been here sharp to time."

Larose shook his head. "But if these two men have been kidnapped," he
said, "as it looks almost certain they have been, then, as I will tell
you in a few minutes, I know something about the man that carried it
out, and I am not inclined to put much faith in anything having been
done by chance as you say." He rose up from his chair. "At any rate, I'd
like to be quite satisfied on that score and therefore, if you don't
mind, we'll have this Mr. Luscombe back and I'll ask him a few questions
myself."

"Then get about it, my son," said Stone pleasantly. He winked at the
superintendent. "We knew we are all as little children in your hands."

So a couple of minutes later, both Luscombe and Spooner were back in the
committee room and had been accommodated with chairs.

"Mr. Gilbert Larose," explained Carter to them, "is an old Scotland Yard
man and he has worked with us upon many cases. So I am sure you won't
mind him going over the same ground again."

"Certainly not," agreed Captain Spooner heartily. "In fact, I'm sure we
are very pleased to meet him. We've heard about him, of course."

Larose smiled at the compliment. "Now, sir, naturally it was no secret,"
he began, "that you were going to play this foursome this morning?"

"Rather not," laughed Spooner, "we challenged them openly in the lounge
last night, when lots of other members were present. Besides, I arranged
with the caddy-master for four caddies to be waiting for us this
morning. You see, the time, half-past eight, was a bit early, and so
special arrangements had to be made to be certain the boys would be
ready waiting."

"You say a number of the members heard you arrange the meeting," said
Larose. "Then do you know them all?"

"Yes, every one of them," replied Spooner, "and they're all good
fellows."

"No strangers to you," suggested Larose, "and all like a happy family
together."

"Quite so," said Spooner, "and we were----"

"Here, you just wait a moment," interrupted Luscombe. "You're not
correct there. Dr. Ryder had got a friend with him, a stranger, and they
were having drinks just behind us, as we were talking."

"Oh! a stranger," exclaimed Larose. "Then what was he like. Will you
please describe him."

Luscombe considered. "Heavy-looking, stout man. About middle-age, I
should say. Very dark skin and wore smoked glasses. Looked a
gentleman"--he grinned--"but not much of a golfer."

Larose repressed the exultation that he felt. "What was his voice like?
Did you hear him speak?" he asked immediately, and then when Luscombe
shook his head, he went on. "And who's this Dr. Ryder?"

"A chap who's just started practising in Cambridge. Very nice young
fellow, and he'll probably be up here in a few minutes. He hasn't many
patients as yet, and generally gets in a bit of golf every afternoon."

"Good!" exclaimed Larose, "then we'll have a talk with him." He changed
the conversation. "Now Mr. Luscombe, but for the difficult starting of
your car, I understand you would have been here to time this morning,
and then your friends would not have been found alone, as, unhappily, we
have to presume they were, upon the seventh green. Well, what did you
find was the matter with the car when you went to start it?"

"The points of some of the sparking plugs had worn too wide apart, and I
could only get the engine to start after a lot of difficulty, and then
it missed badly."

"But do you think the points have been tampered with?" asked Larose with
a frown.

"No," replied Luscombe. "I am hardly of----" but then he hesitated and
stopped. "By Jove!" he exclaimed after a few seconds, "but I remember it
did strike me at the time as being a bit queer, for three of the plugs,
one after another, had got a devilish big gap." He shook his head. "But,
no, no one could have got at the car during the night, although the
garage was certainly not locked, for my big Irish terrier was sleeping
close near." He frowned heavily, and went on speaking very slowly. "And
now you put these ideas into my mind, I thought the dog was as dopey as
an owl this morning, for he just crawled out of his kennel to wag his
tail, and then went back."

"What time was all this?" asked Larose.

"Just after eight. I was up extra early, for I had to call for my friend
here, and particularly wanted to be punctual for our appointment. Both
the doctor and the professor are very fussy about time, and I know they
would take it we were not coming, if we weren't sharp to the minute. I
tried to ring them up, when I found the dashed car wouldn't go, to ask
them to wait, but, of course, the phone was out of order, just when I
wanted it."

"Have you heard since what was the matter with it?" asked Larose.

"Yes, the wife rang up, about 12, to know if I were coming home to
lunch. She said the telephone men had found the wires were crossed."

"And I suppose," smiled Larose, "somewhere where anyone could reach
them!"

Without comprehending the exact drift of the question. Luscombe nodded.
"Yes, just over the wall of the garden," he replied, "under a big tree."

"Thank you," nodded Larose, "that is all I want to know," and when the
two friends had left the room, he turned to the detectives. "And I
think," he said grimly, "we shall find that visitor to the club will
turn out to be a Herr Mitter, of Dunwich Hall, a secret service agent
for a foreign power, whom I have been trailing for three weeks, and with
whom I had lunch only two days ago."

"We were sort of informed," laughed Stone good-naturedly, "that you
would be taking the helm when you came on deck, so just put us wise to
all you know."

And then Larose proceeded to tell very briefly and omitting all
unimportant details, much of what he had been finding out about Herr
Mitter. He had come almost to the end of his recital, when he was
interrupted by a knock upon the door, and the genial Captain Spooner
pushed his head into the room.

"That Dr. Ryder's here," he said. "Should I bring him into you?" and so
a minute later the young medico appeared.

In reply to the questions put to him, he explained at once that he
really knew nothing about the Mr. Howard whom he had introduced into the
club the previous day, and had only given him some golf at the
suggestion of his uncle, the Reverend Julian James, the Rector of St.
Jude's.

"As a matter of fact," he said, "I had never seen him until the day
before yesterday, when my uncle brought him round to my house. Then
yesterday I took him for that round of golf, and, by chance, saw him
again for a few minutes, later in the evening."

"Oh! by chance, and how did that happen?" asked Larose curiously.

Dr Ryder laughed. "Well, I was called in to save him from a police
constable who appeared most anxious to take him up," and then the doctor
related all that had happened about Mr. Howard coming into his surgery.

"And have you by any chance lost anything?" asked Larose with a grim
smile when the doctor had almost finished his tale, "any opium tablets,
for instance?"

"Not that I know of," replied the doctor, "but I can soon find that out,
for I keep my hypodermic tablets in my bag, and it's outside in my car.
I'll go and get it."

"One moment, please," said Larose, as the doctor was about to leave the
room. "Give us your description of this Mr. Howard."

"About five feet ten, middle-aged, stout, with a bit of a paunch,"
rattled off the doctor, "hair black and rather long, small naval beard,
heavy features, dark complexioned and wore dark glasses, prominent upper
lip and front teeth." He frowned. "Didn't look an active man and very
much surprised me how well he could golf. He made some really splendid
shots and beat me four up and three to play," and then upon a nod from
Larose, he went out to fetch his bag.

"Does that answer to the description of this Herr Mitter, Mr. Larose?"
asked Carter quickly.

"Not a bit," scowled Larose instantly, "but it does answer to the
description of one of the disguises that fine gentleman sometimes
assumes."

Dr. Ryder was back again, with his bag. "Now I have three tubes of
morphia tabs here," he said, "two unopened ones and one that has had a
few tabs taken out," but less than a minute's search showed him that
there were now only two tubes there.

"Well, that's awful!" he exclaimed very aghast at the discovery. "Then
the man is a drug fiend!"

Larose made no attempt at any explanation but, looking at his watch,
asked quickly. "Now where does your uncle live?"

"St. Jude's Rectory, Trumpington Road," replied the doctor.

"Trumpington Road!" ejaculated Larose, "anywhere near where Dr. Fergus
lives?"

"Next door," replied the doctor, and Larose without any comment, gave a
low whistle.

"Now look here," said Larose to the two detectives and the
superintendent the instant they were alone, "we shall have to work like
lightning now, for if we don't pick up this Carl Mitter within the next
twenty-four hours, I tremble to think what may happen. Don't forget he
murdered that sentry at Foulness and if these unfortunate professors
don't give up their secret at once, he'll be quite equal to more murder
after he's tortured them to get all he wants." He rose up from his
chair. "Now I'll go and speak to that clergyman and you see what you can
find out at 'The Bull.' Then I'll meet you again at the police station.
I've still got a letter to show you, but it will keep until then."

So about three-quarters of an hour later the four were together again in
the superintendent's office at the police station.

"Things couldn't be clearer," snapped Larose. "He was staying here in
Cambridge three weeks ago for five or six days, and he got to know the
old clergyman by asking permission to photograph his church and then he
made a donation of 5 to the church funds. The rector then invited him
up to a meal and he pumped the old fellow dry about Dr. Fergus. He found
out all about him and Professor Carling; how it was rumored they had
made some marvellous discoveries together in their laboratory; how they
were inseparable and the greatest of friends; how they went golfing
together in the early mornings, and always caddied for themselves"--he
threw out his hands. "Well, he obtained all the information to make
possible, in an easy way, this coup of this morning." He regarded the
others enquiringly. "Now did you find out anything in the hotel?"

"Only that he had the most expensive tastes in wine," frowned Carter,
"that he was seen by one of the waiters, at a public lecture given by
Professor Carling in the Town Hall, a fortnight ago last Tuesday; that
the night before last one of the chambermaids going unexpectedly into
his bedroom, surprised him poring over some large maps, that he had
evidently taken out of a small black attache case that was upon the
table, and that he must have been keeping in his suit-case, because she
had not set eyes on it until that moment; and one thing more, that last
night he went off in a tremendous hurry, after enquiring very loudly of
the reception clerk which was the better way to town, through Royston or
Saffron Walden"--he nodded--"which of course means, although he started
off in their direction, that his ultimate destination was in quite a
different place."

"Well, I'll now read you this letter," said Larose, taking an envelope
out of his packet-book, "and it makes things look not nearly so hopeless
as they may seem. It's the one I found in Mitter's jacket, two nights
ago, and it explains the hurried visit to me of that man when I was in
Moon Buildings. There's no date on it, but it was evidently written the
day before his call and put in the letter box then, when Dr. Smith was
not in his rooms. Listen most carefully," and he at once proceeded to
read very slowly.


"Dear Doctor--Just a line in case I don't have time to look in
to-morrow. I shall be seeing the two beauties off in the morning. I have
picked them very carefully, and they are just what you wanted and will
not jib at anything you want them to do. I've warned them both, on the
quiet, not to trust each other, so that there are not likely to be any
confidences between them. They will find everything O.K., except, of
course, that the place is hellish damp, as might have been expected.
There's just enough furniture that they will want, and I managed to get
it down during the Sunday night. No one saw me come or leave, for I did
not go through the village. I did not drive in through the gates, for
the road there looks as if it would be always muddy, and any car wheels
show up too plainly. There are no blinds to the front rooms, and so they
are not going to have any lights there. Also, I told them on no account
to have any fire. They'll have to make do with the oil heater. I'll see
they don't take down a drop of drink, and they will be close to the
house every hour of the twenty-four. But you need not worry there, for
they'll find plenty to amuse them within ten yards of the back door. The
big one, Dukes you'll call him, lived as a boy at Staines."


He looked up. "That's all, no address, no signature, ordinary envelope,
and paper torn off a pad." He handed the letter across to the others,
and the three heads bent close together, as they scanned through it for
themselves.

A short silence followed, and then Larose spoke again. "Now we can start
off with the certain knowledge that the doctor and the professor were
kidnapped to obtain from them the secret of the composition of that new
glass, and that Carl Mitter, of Dunwich Hall, is the prime mover in the
kidnapping. Mitter found out in some way that Dr. Fergus was directing
the manufacture of the glass upon Foulness, and coming down here to make
further enquiries about him, learnt of his close association with
Professor Carling. Therefore he guessed that the professor would be in
the secret as well, and waited until the doctor came back, so that he
could get them both at one and the same time."

"Of course, he realised it was better to seize them both," commented
Stone, "for then he could be certain that what he got out of them was
the truth. There's no doubt he will put pressure upon them separately."

Larose nodded. "Now first," he went on, "we are all of opinion that he
left here so hurriedly last night to go and fetch these men. He wouldn't
want more than two helpers to deal with Dr. Fergus, and the professor,
and the professor particularly so, taking them by surprise, for
Professor Carling is a man of very small physique, and Dr. Fergus--I
know him--does not look the kind of chap to be able to put up much of a
fight."

Stone looked at the Superintendent. "What do you say to that?" he asked.

"It's exactly as Mr. Larose puts it," he said. "The professor is only
about five feet two, and neither of them are muscular men. Besides, if
he was only going to have two to help him, that would explain in some
way the risks he took to keep Mr. Luscombe and Captain Spooner out of
the way."

"Then between ten o'clock last night and eight-thirty this morning,"
went on Larose briskly, "he was able to go to that house referred to in
this letter, pick up his confederates, and, returning here to Cambridge,
be ready waiting by that seventh green." He looked at each of his
companions in turn and asked sharply--"Now in which direction does that
house lie?"

"North or north-east," said Stone promptly, "for if that fellow who came
to see Dr. Smith in such a hurry that foggy morning had run all the way
from some station, as he told you he had done, then the only railway
station he could have run from would be one near to Moon Buildings and
therefore it was either Fenchurch street, Broad street, or Liverpool
street, and preferably I'd select Liverpool street, because 'seeing
anyone off' implies starting them upon a long journey, and not a short
one as would be the case if they had taken train from Fenchurch or Broad
streets. Besides"--and he pointed with a short and podgy finger to the
letter lying upon the table--"he, apparently, takes some pride in
stating that he managed to get the furniture down during the Sunday
night, suggesting thereby that he was something of a smart chap to have
travelled quite a good number of miles very expeditiously." He nodded
emphatically. "Yes, I vote for Norfolk or Suffolk."

"And I agree there," commented Larose instantly, "for he probably knows
both those counties like the palm of his hand. He's an ardent motorist,
and is always driving about for shooting, fishing, and attending
coursing meetings. Now the next question is, how far away is the place
he's taken them to?"

"Wouldn't it be near," suggested Carter tentatively, "because if the
kidnapping had been discovered soon, he'd have known a call would be
broadcast instantly to look out for his car?"

The superintendent laughed. "If a call had been sent out," he said, "to
anyone acquainted with the by-roads of Norfolk or Suffolk it would have
been child's play to drive through the cordon that had been thrown
round. Why, you could drive from here right across to the North Sea
without touching a village or town, if you knew the country well."

"And another thing," said Larose. "If the house he is taking them to
lies close near, why should he have been poring over large maps the
night before last, as that chambermaid said she saw him doing?" He shook
his head. "No, he was refreshing his memory so that he would be sure of
his route in an emergency."

A short silence followed, and then Larose went on. "Now, we've got to
find a house that has been taken within the last three weeks, and it
will certainly be a largish one, and standing in its own grounds, for it
was isolated enough from other habitations to make the writer of that
letter confident no one heard or saw him bring that furniture in. Also,
it must be of good size, because it has two ways in which you can drive
up to it, for he mentions that it is not wise to make use of one of
them. Well, we want a large house, away from a village, and----"

"Standing on the bank of a river," broke in Stone, who was now holding
the letter in his hand. He looked round at the others. "You see, this
man writes they'll have plenty to keep them amused within ten yards of
the back door. The big one lived as a boy at Staines. Well, can you
think of anything else but fishing that would give them plenty of
amusement for an unlimited period of time, within ten yards of a back
door? Besides he goes out of his way to mention that one of them once
lived at Staines." The stout detective's eyes twinkled. "I've got an
aunt who lives at Staines, and in my time I've lifted many a juicy trout
out of the good old Thames there."

"Splendid!" exclaimed Larose with enthusiasm. "I tried to puzzle that
out, but was beaten every time." He pointed to the letter. "Now there's
another thing that will help us then. Undoubtedly they've got a
telephone installed in the house, for otherwise why should he mention
that the two men would be close near the house during every hour of the
twenty-four? That must mean that he was assuring this Dr. Smith that the
telephone would certainly be heard if the bell rang. Well, if this house
has been unoccupied for some time, which of course it has been, because,
as he writes, it is 'hellish damp as might be expected,' then
undoubtedly again the telephone was disconnected when it was empty. So
it has been put in service within the last three weeks for the new
incoming tenant."

"Very plausible," nodded Carter with a smile, "but how can we be certain
that Herr Mitter himself hasn't owned the house for a long time?"

Larose shook his head. "It isn't likely," he said, "and besides, one
remark in that letter makes it highly improbable. The writer gives
Mitter some advice about the house that, if it were Mitter's own
property, Mitter would most assuredly have known already. He tells him
that the road in front of the drive looks as if it were always muddy,
and he would, surely, hardly write that if it were Mitter's own place."

"Quite right!" agreed Stone sharply. "Then we can get to business at
once and look for a lonely house that has just been taken, has had the
telephone installed or connected up, and is situated upon the bank of a
river."

"Big job as far as the river is concerned," remarked the Superintendent,
gloomily, "if we are going to assume that it is somewhere in Norfolk or
Suffolk." He indicated a big map open upon the table. "Look at the
rivers there. The Great Ouse, 160 miles long, opening into the Wash; the
Yare, 60 miles, running into the North Sea at Yarmouth, and the Welland
and the Nen, both about 80, and opening, too, into the Wash. Besides,
there are scores of lakes, big and small, in both counties."

"Never mind, we'll tap all the telephone exchanges first," said Stone
confidently, "and find where any telephone has been connected for a new
subscriber. Then well get down to a house that is right up close to some
water."

"But one thing," said Larose, as they all rose up to terminate the
conference, "the Intelligence people are adamant that no general
publicity must be made, for if Mitter gets wind we are closing on him it
is almost a certainty he'll burn his boats behind him and murder those
two poor men, out of hand. We are so disturbed there, that not knowing
Mitter's resources and where he's placed his spies, we are not even
venturing to draw a cordon round Dunwich Hall, to intercept him when he
returns there."

"That's bad!" grunted Carter, "for he might be caught red-handed, with
the formula upon him."

"We can't help it," said Larose, "for again, if he knew we were waiting
for him, he'd get the formula put in some place of safety or sent off in
some way before he returned home. If he does succeed in getting hold of
the formula, our only chance of taking it from him is to catch him,
unsuspecting any danger, directly he's set foot again in Dunwich. We are
to receive instant word from the butler, directly the supposed gardener
returns."

And then followed many hours of dreadful anxiety and distress for Larose
and the two inspectors and the myriad helpers who were working under
them. Fully aware how desperate was the need for haste, they none of
them took off their clothes, they had their sleep in snatches and their
meals were nearly always eaten standing up.

They had started off very hopefully, but had soon come to realise the
magnitude of the task before them. The Michaelmas quarter-day had but
recently passed and there had been such a large number of new tenants
taking possession of houses and connections and reconnections of
telephones.

The houses too that in one way or another suggested the particular one
they were wanting were much greater in number than they had expected,
and although the police of three counties were hot upon the trail, the
work, because of the very secrecy in which it had to be carried out, was
necessarily of a slow nature and occupied a lot of time.

When a cordon was being drawn round any suspected place it had to be
done by the best men and with every precaution taken, and as if they
were quite certain they were at last in touch with the gang they were
after.

Then, too, they were handicapped by the fact, as was learnt afterwards,
that the house on Scoulton Mere had been leased privately to Mitter, and
not through any agent, and again, by Larose having made an error in the
deductions he had drawn from what the man had written in the letter
referring to the intensive occupation of the house.

All the writer had really intended to convey was that the two men would
never leave the vicinity of the house to go into the village, but would
always be ready for instant service, and listening for the approach of
any car that would be entering by the back drive, either day or night.

Larose and the two inspectors who were directing all the investigations
kept in touch with one another by almost hourly rings upon the 'phone,
so that in the event of a more than usually likely place coming under
the notice of any one of them, they could gather together with the
utmost speed.

But disappointment succeeded disappointment, and Larose was in the very
depths of despondency when, just as dusk was falling upon the third day,
he had repaired to a hotel in the little town of Wroxham, upon the
Norfolk Broads, for some much needed refreshment, an urgent call came
through upon the 'phone from Stone.

The inspector was at Swaffham, he explained, and there was a supposed
unoccupied house upon the bank of Scoulton Mere that they were going to
examine immediately.

It was not one of these down upon the list as having had the telephone
reconnected, and no one in the neighborhood was aware that it had been
let or sold, and that any one was coming into residence there, and no
signs at all had been noted in the village of any arrivals.

However, the village constable had had it in his mind, as a likely
house, ever since the call for a residence of that description had been
broadcast, and had accordingly been keeping his eye upon it, but
following the general instructions issued, he had made no open move to
approach up closely.

He had cycled by the front gates the previous day and noticed nothing
suspicious, but that very afternoon, indeed not an hour ago, he had come
suddenly to the conclusion that it now was occupied and thereupon had
immediately communicated with Norwich.

"All right," exclaimed Larose instantly, when he had heard what Stone
had to say. "I'll come at once. Where shall I find you?"

"We'll wait for you upon the Higham road," replied Stone, "and be as
quick as you can. We shall be just where you have to turn off to get to
the mere. The house will then be only about three hundred yards away."

And so a little over half an hour later the two cars met. Stone had
three plainclothes men with him, as well as the village constable, and
Larose was accompanied by the three men who had been helping him.

The village policeman turned out to be a very intelligent young fellow,
and for the benefit of Larose quickly repeated his tale.

He had cycled by the house only twice; the first time, the previous day,
and then again not a quarter of an hour before he had phoned up Norwich.

Upon the second occasion, just as he was passing the gates, he had seen
a flock of wood pigeons upon the roof, and while he was looking at them,
to his great suspicion, they had all suddenly whirled themselves into
the air with every appearance of alarm, and he was sure they had been
frightened by someone round at the back of the house. Then a few yards
out of sight of the windows, he had stopped behind some trees, and
sniffing hard, was positive he had caught a whiff of burning paraffin.

"That's good enough," nodded Larose, "and you are a sharp chap. Come on;
we musn't waste a moment."

It was now quite dark, except for the dim light of the stars, and
pushing their way with difficulty through a thick hedge, the party
proceeded to surround the house very cautiously. They spread themselves
out just far enough from one another so that each one was just within
sight of his neighbor. Stone and Larose went round to the back door.

"Have your gun ready," whispered Larose, "for if Mitter's here, he won't
hesitate to shoot."

But there was no light showing anywhere and not a sound to be heard.

Larose tried the handle of the door and it yielded to his touch. A great
misgiving seized him and with a muttered imprecation he flashed his
torch.

They saw a long passage before them, with doors opening on either side.
Wasting no time now and with no hesitation, they ran quickly up, pushing
open the doors and flashing their torches into each room as they passed.

The first two rooms were empty, but in the third they saw the figure of
a man stretched out upon the bed. Larose sprang forward and then as he
took in with a lightning glance the pose of the recumbent figure, and
that he was bound hand and foot, gave vent to a cry of horrified dismay.

"Good God!" he gasped, "it's Dr. Fergus and he's dead."

Then to his great thankfulness the doctor, aroused by their entry,
opened his eyes and stared round.

"Who are you?" he asked feebly. A shudder convulsed him and he went on
brokenly. "You are not going to hurt me any more!"

"No, no," exclaimed Larose quickly, "we're police and you're quite safe
now," and with shaking hands he proceeded to untie his bonds.

"Here, drink this," said Stone and he forced some brandy from a pocket
flask between the doctor's lips.

"I've had a bad time," whispered the doctor faintly, when he had imbibed
some of the spirit. "There's been a devil here. Look at my foot."

With a sickening feeling at his stomach. Larose lifted the coverlet at
the bottom of the bed, but then after a quick glance at the bare foot
exposed, dropped it hurriedly again.

"Where's your friend?" he asked hoarsely.

"Somewhere in the house," said the doctor. He shuddered a second time.
"I heard him cry out, twice."

The men outside were called in and the other rooms quickly gone through,
but there was no one else in the house besides Professor Carling and he
was sleeping heavily in a room just across the passage.

Larose tried to rouse him, but without any success, and lifting up one
of his eyelids, saw that the pupil was like a pin-point. As with the
doctor, one of his feet was bare and upon the sole were four dreadful
burns.

Larose swallowed hard several times and swore a deep oath. Then he
hurried back to the doctor. Stone had lit a lamp that he had found there
upon the table and was just starting to bathe the doctor's forehead with
cold water.

"The other chaps been doped," whispered Larose. "Opium, it looks like to
me, but he doesn't seem to have been given a fatal dose, as there are no
signs of collapse. He's not sweating at all and his pulse is steady,
although very feeble." He shook his head. "But I can't wake him and
goodness only knows when he'll come to. Now it's vital we should learn
how long those devils have been gone, and I'll have to question the
doctor, although it seems very cruel."

Stone nodded. "Well, make it snappy," he said, "for he doesn't look as
if he'd stand much. He says he's had no food since they brought him
here."

Larose bent over the doctor and addressed him by name, and the latter
opened his eyes again and smiled. "I remember you," he whispered. "You
came to Foulness, didn't you? I recognise you by your voice. You are
that Mr. X."

"Yes," smiled back Larose. "I had dinner with you all, that night." He
patted his hand gently. "Now, look here, doctor. You'll be quite all
right now and you'll soon be back home." He spoke reassuringly. "Those
burns are nothing, and will soon heal. It's only shock and weakness
you're suffering from now."

The doctors eyes filled with tears. "But he made me tell a secret I
ought to have died before I told," he groaned. He suddenly raised
himself up and spoke fiercely. "Quick! Go after him and get him put in
prison. It may not be too late yet to shut his mouth. He can't have been
gone very long."

Larose pressed him gently back upon the bed. "Now, don't you anger
yourself," he said soothingly. "Lie quiet and keep every little bit of
strength you've got to help us." He spoke with complete confidence.
"I'll get that fellow in a few hours, and before he's had time to do any
harm. I know who he is and where he lives." He bent down closely. "Now
tell me how long he's been gone."

But his emotion had exhausted the doctor, and he had closed his eyes
again. "I don't know," he faltered wearily. "I can't think or remember
anything, and I lost all idea of time. I seem to have been lying here
for months and months."

"Nonsense!" exclaimed Larose sharply. "It was only the day before
yesterday that they brought you to this house. Come, come, be brave and
pull yourself together." He spoke in very matter-of-fact tones. "Now,
there were three of them, weren't there?"

"Yes, three of them," replied the doctor, opening his eyes and his face
brightening a little. "I can remember that." His voice grew stronger.
"Yes. They came up to us when we were on the golf course, and one of
them knocked me down." He put his hand up to his face. "Oh, my jaw is
still so dreadfully sore."

"Of course it is," said Larose sympathetically, "and anyone's would be."
He laughed. "See, your memory's all coming back."

"Yes, and then I didn't wake up for a long while," went on the doctor
slowly, "and then one of them began asking me questions, and I wouldn't
tell him anything." His voice began to choke. "He wanted, he wanted----"

"The secret of the new glass you're making, of course," said Larose
cheerfully. "And naturally you didn't want to tell him. Then he hurt you
to make you speak, and, like a sensible chap, you realised there was no
help for it, and so you told him." He laughed again. "Why, anyone would
have done it. I am sure I should."

"But I didn't give in at once," said the doctor tearfully. "He had to
burn me twice."

"And very plucky of you," said Larose, "to hang out for so long." He
nodded. "Then, having got what he wanted, he, of course, went off at
once with the other men. Now tell me, how long ago do you think that
was?"

"Oh! I can't remember," replied the doctor faintly. "I have no idea at
all. It might have been yesterday; it might have been ever so long ago."

"But you became thirsty after he had hurt you, didn't you?" suggested
Larose. "You know, people generally do, after pain."

"Yes, yes, I did," said the doctor at once, "and he gave me a drink of
water. He was quite kind to me then, and held up my head so that I could
swallow it."

"But some of it was spilt," went on Larose, "and that's how your collar
became wet. I've just noticed it. Feel, it's still damp down this side."

"Yes, that's it," said the doctor. "I felt some of it trickle down."

"Then of course," laughed Larose, "they can't have been gone very long,
for only a little bit of your collar is wet and it would have been quite
dry now if you had had your drink hours and hours ago."

"Yes, I remember now," said the doctor, "seeing a streak of lamp-light
above that door, some time after he had left me and I couldn't have seen
it if it had been daylight outside." His voice rose to a wail. "No, they
can't have been long. Oh! do be quick and go after them! He got the
secret of the formula out of Professor Carling, first, and then he
compared mine with his. He said he would have killed us both if they
hadn't been the same. He threatened me with a pistol." His eyes glared
wildly. "Oh! say my friend isn't dead!"

"No, no," said Larose, shaking his head. "He's only been drugged with
opium and he's quite all right."

"That's what the man said he was going to do," cried the doctor, "and he
told me that when my friend woke up he would be able to cut these cords
for me and we could both get away."

"What was the man like to look at?" asked Stone. "Can you describe him?"

"He was rough and coarse," replied the doctor, his anger now seeming to
give him strength, "and he had a stubby beard. His front teeth were
prominent and very stained and on one side there were several missing. I
never saw his eyes, for he had big, dark glasses on all the time. He
always had his hat on, too, and it was pulled down low upon his
forehead, and he always wore gloves, so I didn't see his hands."

The doctor sank back upon the bed. "But please don't ask any more
questions," he sighed. "I've told you all I know and I'm very tired."

Larose rose briskly to his feet. "Well, don't you worry any more," he
said. "As I say. I know where the fellow lives and as he won't be
expecting us, I'll most likely get that formula back before the night's
out. Good-bye for a little while. This gentleman here is Inspector Stone
from Scotland Yard, and he'll see you both out of your troubles now.
Your bad times are over."

"There's a phone here," said Stone when they got out in the passage,
"but it's not working, so I've sent the constable into the village to
ring for an ambulance from Norwich. These chaps will be best in
hospital."

They made a quick survey of the big kitchen which the men had evidently
used as living-room as well.

"We'll look out for finger-marks here," growled Stone, "but we'll
certainly not find any of the party we most want, if he were wearing
gloves all the time, as that poor chap says. Gosh! Look at those empty
tins! See, only hard biscuits! They've had no bread! They've been living
here like animals all the time!"

But Larose had darted to the scullery sink. "Look at that soap," he
said, breathing hard. "It's almost wet. No, they've not been gone long,
and I'll be off at once."

"But you just wait a minute, my friend," said Stone sharply. He eyed
Larose curiously. "The formula's gone right enough and it seems to me
you've a devilish poor chance of preventing it getting out of the
country. Now what exactly are you going to do?"

"I'm not so sure that I won't get it back," snapped Larose. "He'll be
thinking he's quite safe, and as there is nothing to point to him in the
matter, he won't be in any desperate hurry. So if I know anything of my
gentleman and his habits and his love of comfort, I reckon he will go
home and have a hot bath, and a good night's rest." He waved his arm
round. "As you say, look how he's been pigging it here! No bed to sleep
on, and, of course, like us he's not taken off his clothes for two
nights!" He laughed. "And he'll be wanting a good dinner, too, and a
bottle of that wine he gave me. I know him!"

But the stout inspector looked very grave. "But, see here, son," he
said, raising one fat forefinger warningly, "unless you knock him out
and score a straight-out bull's-eye by finding the paper on which he's
written down the formula, actually upon him--remember, you've got deuced
little to go on. The doctor here's not going to identify him, and, from
what you tell me his ordinary appearance is, none of those people in
Cambridge are going to, either." He shrugged his shoulders. "And with
the alibi you tell me he can put up--and there again--remember, it's
mostly conjecture on your part, and you may be able to prove
nothing"--he threw out his hands--"why what jury would convict?"

"Jury!" exclaimed Larose scornfully. "He's going to get no jury!" He
gritted his teeth together. "Go and look at those burns on the
professor's feet. He held out longer than the doctor did, and the iron
was put on four times. The flesh in one place is burnt to the bone." He
looked round to make sure they were not being overheard, and lowered his
voice to a whisper. "By hook or by crook, Charlie, that man's going to
meet trouble tonight."

Stone grinned uneasily. "Then good luck to you, my boy, and reckon upon
a farewell visit from me the night before you come to take the drop." He
spoke in matter-of-fact tones. "Well, after these poor devils have been
taken to hospital, I'm going to ring up the Yard. My job's finished
here, and I must get further instructions from headquarters."

Larose was adjusting his motor gauntlets. "Well, if they decide you are
to follow me, when you come to a small plantation on the right, about a
mile beyond Westleton village, stop and see if I've left any message for
you. My men will be waiting there, as I shall go up to Dunwich Hall,
alone."

"No witnesses, eh?" queried Stone with a frown.

Larose shook his head. "Not if I can help it. I'll tell whatever tale
there is to tell--myself."




CHAPTER XIV.--"THE BURIAL OF THE DEAD"


Now it was by a bare half-hour, only, that Mitter had left the house
upon the mere before the cordon had been drawn round it.

He had gone off by another by-road, and turning into the main Norwich
road, much higher up, his car had actually passed that of Larose just as
the last-mentioned was emerging from the environs of the city itself.

Having no idea that his identity as the Mr. Howard of the Bull Hotel had
been discovered, and that two days previously every police constable
within a radius of 150 miles had been on the lookout for a man of that
description, in a grey Jehu car, with number plates C.L.3964, he left
Scoulton Mere in the disguise he had assumed in Cambridge, except that
for comfort's sake he had now discarded the small naval beard.

He was of opinion that he was perfectly safe, but had he only known it,
his immunity from discovery and arrest, during the succeeding few hours,
was almost miraculous. He passed, unhindered, constable after constable
whose minds, forty-eight hours previously, had been obsessed with the
thought of a stout, dark man in a car like his.

He had no intention of returning straight to Dunwich, but was intending,
first, to drop his confederates in different places, with the idea in
his mind that they should have no opportunity of talking over all that
had happened. He was fearful that in their relief at having finished
with the whole business, and with their very substantial pay in their
pockets, they might be inclined to open out a little to each other, and
discuss what had taken place.

So he drove openly into Norwich and landed Dukes at the railway station
there, waiting even, to see him off in the London bound train, so that
by no chance should a drink or two in the city unloosen his tongue to
any companions he might pick up there.

Then, with the same confidence, he carried Fletcher to Great Yarmouth
and saw him off in a train, too. Then he purchased the morning and
evening papers both of that day and the preceding one, and betaking
himself to the refreshment buffet of the railway station, proceeded to
scan through their contents.

He was, however, not much surprised to find no reference to the missing
men, for he had been rather expecting the authorities would not have
deemed it advisable to broadcast anything of their disappearance in the
press, lest the public, generally, should have become too curious as to
the exact significance of their kidnapping.

He turned also to the obituary column and those reporting fatalities and
accidents, and frowned when he found nothing of interest to him there.

Then he heaved a deep sigh of relief that the difficult matter of
obtaining the formula was over and done with, and returning at length to
his car, which he had parked outside the railway station, he drove
leisurely away in the direction of Dunwich.

As he drove along his thoughts were certainly very exultant ones. He had
possessed himself of the greatest secret that, surely, any secret
service agent had ever obtained, and one that would be of incalculable
value to his country. He was quite certain that he had obtained the
correct formula from his victims, for the two that they had given him
tallied exactly.

During the past few weeks he had made an intensive study of the chemical
composition of various classes and he marvelled now at the very slight
variation in the combination of the metallic oxides used, as shown by
the formulas he had written down, that could give to this new glass a
refractive index differing so very little to that of air.

For safety's sake he had already committed the formula to memory, and it
was indelibly impressed upon his mind.

There way one fly in the ointment, however, and it was a fly of rather
large dimensions, for he could not help feeling very disturbed whenever
he thought of Larose, and he was keenly disappointed that no accident,
as he so confidently had hoped, had apparently happened to him.

For upwards of a year, he ruminated, he had been aware that he himself
was being watched by the counter-espionage people in Whitehall, and
knowing now that Larose was working for them, as evidenced by the latter
having been closetted for three hours that night in Room 13, it had
become the obsession of his, Mitter's mind, that it was to Larose he
owed all that had taken place that morning in Moon Buildings, when
someone had gained an entrance into the consulting room and acted the
part of Dr. Smith.

The very daring and audacity of it, he told himself, was just such a
thing as Larose would do. The prim and orthodox Intelligence Department
would have never thought of it. They would not have had the imagination,
and if they had, they would not have dared to carry it through.

But Larose would dare anything, and it was well known that, if need
arose, he could be as unlawful and unscrupulous in his acts as the most
hardened criminal who had ever stepped into the dock. And he, Mitter,
looking back, thought he could see clearly how it had all come about
that Larose had taken up secret service work against him.

Up to that day of the shooting party at Carmel Abbey, he and Larose had
been good friends. He had admired him and thought him excellent company,
and had never wearied of the tales he had told of his detective days.

But that afternoon, Arthur Grant, Colonel Bevan, and Sir Herbert Carnaby
had unexpectedly become aware that Larose knew him, and no doubt that
night had made a confidant of the ex-detective, and there and then
enlisted him in their service.

Of course, Larose had been thrilled with the idea, for the passion of
his life was hunting people down, and it was well-known that, with all
his altered circumstances, he had never shaken off his love of trailing
anyone who was working against the law.

But then Mitter threw off his gloomy thoughts and smiled complacently to
himself. Well, he had bested them all this time, for sure! He had proved
himself as great a master as Larose, and had smitten the famous British
Secret Service hip and thigh.

And there was no likelihood, either, he told himself, that Larose or
anyone else could bring home the kidnapping of the professors to him.

He had covered his trails everywhere, and even if the gravest suspicions
came to be held that it was his work, no one would ever be able to prove
anything.

He was sure his disguises had been so good that no one would possibly be
able to identify him; his helpers had melted back into the underworld,
and would not know him again if they saw him, and his good fortune had
held all along.

He speeded up sharply, thinking with pleasurable anticipation of the
comforts of Dunwich Hall that were awaiting him; and then, all suddenly,
the good fortune that he had been so congratulating himself upon began
to peter out.

To begin with, in passing through the main street of Lowestoft, he
collided with a man upon a bicycle, and although the man appeared to be
only very slightly hurt, and was quite satisfied with the two pounds
given in compensation for his injuries, a crowd gathered, and after some
questioning of Mitter by a young policeman, the latter asked to see
Mitter's driving licence.

Then, as Mitter had already given a false name and address, and as his
number-plates were false as well, it was not surprising he was unable to
produce it.

Further, although he promised to forward it for inspection, within the
regulation forty-eight hours, the policeman was not satisfied, and with
pencil and notebook in hand, stood regarding Mitter very doubtfully. It
was three days since Mitter had shaved, and his general unkempt
appearance made the young constable suspicious that the car might have
been stolen.

"I've been duck-shooting on the Fens," explained Mitter, casually,
noting and understanding the policeman's intent regard, and then he took
out a gold cigarette case, and helped himself to a cigarette. "If you've
any doubt about my possessing a license," he went on, "ring up the Chief
Constable of Norfolk, Sir George Blamey. He's a friend of mine."

Whereupon the youthful guardian of the law, impressed by the cigarette
case and the mention of the Chief Constable's name, at once thought
better of asking Mitter to drive round to the police station with him
and interview the inspector. Instead, with a gesture of great magnanimity,
he closed his notebook with a snap and waved for Mitter to drive on.

A few hours later, however, when Police Constable Peter Jones came to
make out his report of the day's happenings, he became all suddenly a
very sick young man, for it had flashed like a stroke of lightning into
his mind that a bare forty-eight hours previously an urgent call had
been broadcast to look out for a stout, dark man, who would be driving a
grey Jehu car, and who might, or might not, be accompanied by two other
men.

Thereupon, with a word he did not often use, for Policeman Jones had
been brought up a good young man, he tore a whole page out of his
notebook and consigned it to the fire.

In the meantime Mitter had made all haste to get out of the town, and
the moment he was clear of its environs he turned off the main road and
began to zigzag among the small and generally little used lanes lying
adjacent to the coast.

He was fearful that the young policeman might after all have rung up the
Chief Constable of Norwich, in which case he knew that gentleman would
have at once repudiated all knowledge of any individual of the name he,
Mitter, had given.

"A close thing!" he murmured. "Touch and go all the time! If only he had
looked to see if there was any gun in the car!" He wiped over a rather
clammy forehead. "It would have been a dreadful piece of luck if the
last card had given them the odd trick!"

But he was not free of all his troubles yet, for he had not been driving
ten minutes when he had a blow-out, and, added to that, he found that
his spare tyre was flat. He had trouble then with the valve of the inner
tube, and altogether he was delayed a full three quarters of an hour.

However, at last he was able to proceed again, and then, when within two
miles of Dunwich, his movements to anyone who had been watching would
have seemed very peculiar.

He switched off his lights, and, driving very slowly, turned off into a
narrow lane, at right angles to the one he had been travelling upon.
Then he stopped his engine altogether, and alighting from the car,
disappeared up the lane. He was gone about five minutes, and then
returning at a quick run, he jumped into the car and drove it very
quietly in the direction from which he had just returned.

Ten minutes later, quite a different-looking man appeared from the
entrance of another lane, about a quarter of a mile away. The man was
riding a bicycle without any light, and upon his head was a tattered
hat, pulled low down. His clothes were worn and soiled, and evidently
his walk in life was a lowly one.

He pedalled quickly along under the bright moonlight that was flooding
the countryside.

       *       *       *       *       *

As Larose, upon driving away from the house upon the mere, with open
throttle and with foot pressed hard upon the accelerator, pushed his
engine to its utmost revolutions, there was no one sitting in the car
who was not filled with troubled thoughts.

As the car swayed and bumped and rocked, and as it shot like a bullet
down the narrow lanes, the three men who were accompanying Larose were
not disinclined to be of the opinion that each moment might turn out to
be their last, and that whatsoever dangers might lie at the end of the
journey, they certainly could not prove more serious than those to which
they were then being exposed.

It was true that there was a full and bright moon, and that their
association during the past two days with the man who was now driving
the car had given them every confidence in his complete mastery of it,
still--a rate of fifty, sixty, and even seventy miles an hour could
never be without its hazards along the narrow by-roads they were
traversing at such a pace.

But with Larose himself the trouble of his thoughts was of quite a
different nature.

When he had started upon his journey from the Mere, his one idea had
been to get in touch with Mitter with the least possible delay, obtain
the paper upon which he would have undoubtedly written down the formula
he had wrung by torture from his victims, and then--much harder
still--find some occasion of so dealing with him, that Mitter would get
no chance of passing on the secret to anyone else, by word of mouth.

But now the dreadful thought had come to him that, after all, Mitter
might not be the man he actually wanted, and that in laying hands on
him, he might grasp only the shadow, and the substance would be evading
him.

For now he came to review all the evidence dispassionately, he saw that
he could not be certain it had been Mitter who had been either the Mr.
Howard of Cambridge or the torturer in the house upon the mere.

For was it not possible, he asked himself, that it might have been the
other man, the supposed ill-kempt gardener, Sullivan, who was so much
like Mitter, who had carried out the kidnapping, and indeed, who all
along had been the one he had trailed from Foulness to Moon Buildings?

The similarity between the two men, as he had seen with his own eyes,
was a profoundly striking one, and there could be no doubt they were
close blood relations--it might even be that they were brothers--and
capable and enterprising as Mitter undoubtedly was, it might be that the
same or even greater powers of intellect were possessed by the other man
and that his was the master mind.

It was certainly Mitter who had been watched by the Secret Service for a
year and more, but undoubtedly aware that he was under their suspicion,
as evidenced that he knew Dempster had been writing letters to the
Intelligence Department as to what was going on at Dunwich Hall, he had
yet sat tight, and carried on as if he had no fear of any grave
consequences if things did come to a climax and there was a showdown of
all the cards.

It looked as if Mitter were quite confident that if the authorities did
strike at him, they would get nothing for their pains!

Then as Stone had just warned him, Larose, what evidence had he against
either of these men that would satisfy a jury if they were brought to
trial?

Very little, or practically none, for everyone who had been brought in
contact with them on their varying disguises had been chary of
recognising them and had had to be prompted in picking them out, and
then had only 'thought' there was some kind of likeness! Yes, there was
no sure ground anywhere.

Larose shook his head vexatiously. "But I know it has all along been one
or other of them," he snarled. "I need no convincing, and whoever is the
torturer or the murderer, they are both damnable and dangerous spies,
and to be too squeamish now in dealing with them would be sheer
cowardice on my part. Of one thing I am quite certain. It was Mitter who
tried to poison me, and on that account, alone, there must be some
settling up."

Then he began to think what exactly he was going to do when he reached
Dunwich Hall and his perplexity was at once as great as ever.

It was one thing to have told Stone he was going to deal with Mitter out
of hand, but it was quite another when he began to consider how exactly
he was going to do it.

It was impossible to go boldly up to the Hall and threaten Mitter with
immediate death if he did not at once deliver over the formula. Mitter
would call his bluff instantly, for the son of Mangans, the spy, was no
fool and would know quite well there would be no pistolling with
witnesses about. Besides, there might be no formula to deliver up, for
if Mitter were, indeed, the one who had obtained it, he might have
committed it to memory and burnt the paper, before he had even come away
from the house upon the mere.

And yet again, whichever of the two men had returned to Dunwich that
night, he would certainly have instantly passed on the secret to the
other, and therefore to deal with only one man was as profitless as
dealing with neither.

Larose heaved as deep a sigh as he had ever heaved in all his life--and
then suddenly a ray or hope flashed in to his mind, the hope of the
gambler who is for ever expecting fortune from yet another throw of the
dice.

It might be that he would reach Dunwich before the torturer had
returned!

Instantly then, he quietened down to the calmness of one adding up a
sum, and proceeded to reason very slowly.

The man had had barely an hour's start of him! He could be almost
certain there, for surely the wretch would not have ventured to leave
the house until night had fallen. Then he had seen that piece of soap
had not been thoroughly dry, and, then again, the doctor's collar had
been wetter than it would have been if he had been given that drink of
water a good time before.

Then was it likely the car would have been stopped by some policeman who
remembered that a broadcast had gone out, two days before, for a grey
Jehu driven by a stout, dark man, wearing glasses?

Larose did not think for long there. No, he was afraid not, for in
arranging the broadcast that was to be sent out, he had trained it, he
realised now, as referring rather to a car that would be found upon the
roads that same day. Unhappily, at the time, he had not taken into
consideration the car going into hiding for forty-eight hours and then
re-appearing to make another get-away. Besides, the kidnapper might no
longer have the appearance of a stout, dark man, and grey Jehus were as
plentiful as blackberries.

Then next--would the man have gone straight home?--and at once Larose
shook his head emphatically. No, certainly not! He would never have put
himself into the power of his two low class confederates, by letting
them become aware, either, who he was or where he lived. The whole
suggestion of the letter put into Dr. Smith's letter-box was that Mitter
had little, if any, knowledge of the personalities of the men who were
going to help him, for had not the writer assured Mitter they would be
just the sort of men needed, and would give no trouble in the carrying
out any job that was entrusted to them?

Well, if Mitter was not then going to let them know where he lived, it
was quite feasible he would not let them hazard its direction, either.
So he would not get rid of them, going back in a bee-line for Dunwich,
and it was hardly likely he would drop them at a small country railway
station, where their presence would be noted. Therefore, considering the
locality of Scoulton Mere, it was almost certain it was to Norwich he
had taken them, and that being so, it could be guessed he would have
purchased the daily newspapers there, and scanned through them to see
what was being broadcast about the missing men. All that would have
taken up time, minutes only, perhaps, but the minutes would all mount
up.

Then, too, and what heartened Larose more than anything, not only would
Mitter have not driven as furiously as he was driving, but also, when
Mitter had arrived somewhere in the vicinity of Dunwich he would have
had to leave his Jehu in the secret place where he was accustomed to
hide it and proceed the rest of the way home, on foot.

They knew from Dempster that the two Hall cars had not left the garage
during the last three days, and, therefore, Larose was quite sure that
this third car, the Jehu, had been kept handy somewhere and taken out,
as it always had been, when Mitter was being under-studied by the
gardener, Sullivan. No doubt, unknown to his domestics, save only to the
parlormaid, of course, Mitter had some way of leaving the Hall secretly,
and no doubt again, in some disguise he was accustomed to pick up the
car, unseen, and proceed upon his many mysterious journeys, when he was
supposed by all to be so busy painting in his studio.

Arriving at last at the small plantation on the Westleton road, to the
great relief of his passengers, Larose slowed down and drove between the
trees. Then, bidding the three men wait there and keep an eye out for
the coming of Inspector Stone, he set off at a sharp pace across the
field to Dunwich Hall.

Reaching the entrance to the grounds, he peered quickly round to see if
there was anyone in sight. But the drive and gardens were quite
deserted, and so, making his way boldly across the lawn, he turned the
corner of the house until he came in full view of the rooms occupied by
Mitter. There was only one light showing there, and it was in the
studio.

"Now, if I'm right," he whispered, his breath coming quickly in his
excitement. "Sullivan won't be in his cottage. One or other of them will
be away."

He turned at once in the direction of where the gardener lived, but then
not thinking it wise to pass down the gravel path, so brightly lit by
the full moon, he edged his way along the other side of the garden,
where, if the moonlight were still upon him he would yet be out of the
sight of the windows of the house.

He had come to within ten paces of the massive oaken door, let in the
great, high wall of the ruined chapel, upon which was perched the broken
arch that Mitter, but a few days previously, had pointed out as
appearing to have become so dangerous, when close near him he heard a
harsh crunching sound as of some heavy object being impeded in its
movements by pieces of stone or gravel.

He stopped instantly, and turning his eyes in the direction from which
the sounds had come, to his consternation saw the door itself being
pushed open very slowly, and directly the opening was wide enough the
figure of a man slip through.

Apparently, however, the man did not see him, and very gently, although
with some effort, because of the small stones that had become wedged
underneath, he closed to the door, and then bent down to slip the large
bolt into its socket.

Then Larose took in for the first time that the man was carrying a
small, black attache case, and as the latter straightened himself up he
saw his face.

"Good God!" he gasped, "it's the gardener!" His heart beat furiously.
"He was the torturer, then, and that is the black attache case they saw
him with in Cambridge," and his hand slipped back like lightning to the
little automatic in his hip pocket.

But the man was still unaware of the presence of Larose and tilting a
battered hat from off his forehead, he turned his eyes upwards towards
the broken arch. Then, in the same attitude that he had seen Mitter
assume once before, Larose saw the gardener now place his ear close to
the wall and listen intently.

Larose gasped again. "But it's Mitter, it's Mitter!" he breathed. "Then
it is he who has been the arch-criminal all along!" and instantly he
proceeded to cover him with his pistol.

Then Mitter looked round. His eyes opened very wide, his jaw sagged and
his legs bent at the knees. The moon made everything as bright as day,
and he recognised Larose and saw the upraised pistol in the latter's
hand.

"Don't move," snapped Larose. "Keep your hands down or I'll shoot you on
the instant."

Mitter composed his features to instant calm, and, as motionless as a
graven image, stood regarding Larose almost contemptuously and with no
trace of fear. His forehead, however was pricked out in little beads of
sweat.

Larose wreathed his lips into a pleasant smile. "Herr Mitter, I
believe," he remarked gaily, "although certainly not quite so spick and
span as I am accustomed to see him." He looked curious. "Been away for a
little holiday, eh, while friend Sullivan has been understudying here?"

For one fleeting second Mitter's face twitched ever so slightly, and
then it sank into an expressionless mask.

"Just returned from Scoulton Mere, of course," went on Larose, still
smiling, "and no doubt you've got the formula in your pocket, or else in
that little attache case that the housemaid saw you with in your bedroom
at the Bull Hotel?"

Mitter made no attempt to hide his emotion now, and his face puckered
up, and his eyes glared like blazing coals.

"Oh! yes," exclaimed Larose, carelessly. "I know you've got the formula!
Dr. Fergus happened to mention it when we were examining his burnt
foot." He nodded. "You are keen on your work, Herr Mitter, and those
four burns you gave Professor Carling must have needed a lot of nerve."
He shook his head. "I know I could never have braced myself up to make
them."

Mitter made no comment. He was swallowing hard. The perspiration was now
dripping from his forehead, and his face, under its dark stain, had
taken on a dreadful hue.

Then in one split second Larose dropped his railling tone. "Why don't
you reach for your gun?" he snarled. "You have got one, you brute, for
you threatened Dr. Fergus with it." He jeered. "Have you lost all your
courage at last?"

Mitter spoke for the first time. "No, no," he said, shaking his head,
"you don't get me that way, Mr. Larose." He jeered now in his turn.
"You'll have to shoot me in cold blood!"

"Ay! in cold blood," retorted Larose, furiously, "as in cold blood you
tortured those poor wretches with your burning iron." He nodded grimly.
"Yes, I'm going to shoot you, right enough, but I'm just considering
whether to only cripple you and then let you be hanged later on."

Mitter made a grimace. "In the forehead, if you please, Mr. Larose," he
said very quietly. "You've got everything you want and you can afford to
be generous." He made a little shrug with his shoulders. "I have only
done my duty, and I found it a horrible business at times."

"Who else has been working for you," asked Larose sharply, "besides that
man you call Sullivan, and the girl."

"The girl knows nothing," burst out Mitter with some heat, "and you
leave her alone." He smiled in some amusement. "And Sullivan knows
nothing, either. He's just been a puppet and that's all."

"You lie there, Herr Mitter," retorted Larose instantly, "for I know
that bogus gardener is a kinsman of yours and has been working hand in
glove with you all the time." His voice rose in anger. "Good heavens!
man, don't you think you can bluff me, for I've been watching you for
weeks, now!" His words poured out mercilessly. "I know all about your
murder of that sentry on Foulness; I trailed you to Moon Buildings and
was Dr. Smith there, that morning; I know you gave me a dose of
belladonna and tampered with my car." He jerked his head back in the
direction of the Hall. "I got in there the night you were at the Ipswich
mayoral banquet and was actually in your bedroom when you came home and
asked that girl if she'd got hold of Dempster's letter that day." He
spoke tauntingly and very slowly now. "Then from the pocket of your
jacket, Herr Mitter, I picked the letter that, later, gave me the whole
clue as to where you were hiding the kidnapped men." His eyes gloated.
"Oh! how I've beated you--you spy, and the son of a spy!"

And all the time Larose had been speaking, he had been on the watch, and
waiting for some movement of the goaded man. He had seen the blind fury
welling up into his face, the growing frenzy of his blood-shot eyes, and
the quivering of the nostrils he could not keep under control.

Then, suddenly, he saw Mitter's knuckles tighten and a stiffening of his
right arm, and when in a lightning throw the attache case came hurtling
through the air, and with the spring of a panther Mitter darted
forward--there came the sharp crack of the automatic, and Mitter crashed
down with a bullet in his heart.

The son of Mangans was dead.

Larose drew in a deep breath, as if he were being suffocated, and
glanced apprehensively around in all directions.

But the gardens were everywhere deserted, and lay white and ghostly
under the moon.

He sprang over to the dead man and dragged his body close up to the base
of the wall, so that it might possibly escape notice, if anyone had
heard the shot and came out to see what it meant.

Then with a shudder of repugnance, he unbuttoned the blood-soaked coat
and went through the pockets, but all he found of interest was a thick
wallet in the left breast one. There was ghastly evidence as to where
Mitter had been hit, for the wallet was drenched with blood and pierced
with a hole where the bullet had gone through.

With shaking fingers he parted the dead man's lips and saw, as he had
expected, that the teeth were artificial. Then he covered the face with
the battered hat, and ripping up a length of hessian that had been
pegged round to protect some young trees nearby, he spread it over the
body from head to feet.

Then he stood up and glanced furtively round again.

But he had scant time to consider what he would do next, for he heard a
door opening somewhere, and so, darting up the path towards the house,
he crouched down among a clump of rhododendrons about twenty yards away.

Then he heard the crunch of running feet upon the gravel path, and a few
seconds later a man appeared round the corner.

"The other one!" exclaimed Larose, with his heart pumping hard, "and
dressed exactly as Mitter dresses! He heard the pistol, and has come
out, as I thought someone might!" His breath came with an effort. "But,
good God! What will happen if he catches sight of the body?"

The man reached almost to the clump of rhododendrons and then, when not
a dozen feet from where Larose was crouching, stopped, and with a
frowning and puzzled expression upon his face, stood looking up and down
the garden paths.

"Oh, but how like Mitter he is!" murmured Larose. "I could almost
believe he were Mitter himself." A grim smile came into his face. "So,
so, he's carrying a gun, and it's got a silencer on it, too!" He nodded.
"He's no innocent, this fellow!"

A few seconds passed and then, when from the man's attitude it seemed
that he was about to give up all further quest and retrace his steps,
his frown deepened suddenly, and, lifting up his head, he began to sniff
hard.

"He smells the cordite," breathed Larose, "and guesses a pistol has been
fired near here!"

Then the man sprang forward and started to run quickly up the path
towards the chapel wall.

"He's seen the body," muttered Larose, "and now for trouble! These
bushes won't hide me ten seconds, if he begins looking about!"

But, to the great relief of Larose, the man had not apparently caught
sight of the body, for, passing it unheeded, he made straight for the
big oak door and pulled upon its massive handle.

It was evident he did not notice that the door was now bolted, for as if
angered that it did not yield immediately, he gave it a fierce
resounding kick and then tugged again at the handle, but much more
viciously this time.

The door did not yield the fraction of an inch, but from high above came
a crack, then a loud rendering sound, and all in the passing of a second
the avalanche was loosened.

In a lightning swoop the broken arch swerved down, and, thirty feet
below, stuck like a giant hammer upon the chapel wall. The great wall
shook, and quivered, and then, in one tremendous heave, swayed forward
and came crashing thunderously to the ground.

Too late, the man by the door had seen his danger and had started to
dart back, but a huge stone fell upon him and crushed him to a pulp.
Then, quicker than the tongue can tell, the dreadful drama had run its
course and the two bodies were lying deep beneath a thousand and more
tons of masonry, while high up into the air rose a pall of blinding
dust.

So, twice had Death struck that night, on the same spot and with such a
little time between.

The dead men had been without scruples, implacable in their hatreds, and
merciless as beasts of prey, but surely their tomb, now, was one that an
emperor, saint or holy man might envy, for not one stone that covered
them was not hallowed by a thousand, thousand prayers, and saturated
with the chants and anthems of eight hundred years.

With heaving breast and heart palpitating furiously, Larose had sank
down on to the ground. The death of the second man had been all he could
have wished for and yet, now that he had seen it happen before his very
eyes, he felt sick with horror.

Suddenly then, for the second time that night, he heard a door being
opened in the hall and then came loud voices and the sound of scurrying
feet.

"The chapel wall's gone!" shouted Dempster, and his wife, just upon his
heels, gave a shriek of terror, and clutched at Margaret Advent who was
following close after.

Then in an awed and dreadful silence the little group stood waiting
until the dust had cleared away, and the full extent of the catastrophe
could be seen.

"Lord!" ejaculated Dempster, "it'll take weeks to clear away! There's
work here for twenty men."

"But the master won't have it done," cried Mrs. Dempster quaveringly.
"These stones are holy relics to him." A thought seemed suddenly to
strike her, and she opened her eyes very wide. "But where is the
master?" she asked. "Why hasn't he come out?"

"He said he was going for a walk just after dinner," remarked Margaret
quietly, "and I suppose he's not come back yet."

Larose took in the pale and beautiful face of the girl, and a pang of
conscience seized him. "Poor little devil!" he murmured, "and I've
killed the man who has perhaps been her lover! Oh! If she only knew it!"
He nodded. "And she's in for more trouble. We'll have to arrest her
now."

A few minutes later the little party returned to the Hall. Larose was
able to get away unnoticed, and he hurried back to the plantation upon
the Westleton road. He arrived just in time to see a car pull up and the
unmistakable figure of Stone alight briskly. He called and beckoned to
him.

"Well, they've decided not to wait another minute," announced the
inspector, directly Larose had drawn level with him. "We're to arrest
Mitter upon the charges of espionage they can already prove, and we are
going to take the other man on spec, trusting to find out something
about him when we've searched the place, and then----" But he broke off
suddenly, and with his eyes glued to the black attache case Larose was
carrying, asked sharply:--"What's that? Have you done any good?"

"Yes," nodded Larose, with a very weary smile, "and this is the attache
case that belonged to Mitter. It contains four sets of artificial teeth,
a naval beard and a scrubby beard, dark glasses and a case of make-up."

Then drawing the astonished inspector to one side, he told him
everything that had happened. The eyes of Stone dilated like saucers and
he breathed hard and heavily, as he listened to the tale. Then when
Larose had finished he clucked his tongue, vigorously, against the roof
of his mouth.

"And you're the luckiest man in creation," he said enviously. "You scoop
the pool every time." He looked over his shoulder and lowered his voice
to a whisper. "But see here, my son, I don't think anything of this had
better come out, at any rate, we won't tell anyone now. We'll wait and
see what the Intelligence people decide." He nodded. "Maybe, they'll
think it best to let those two gentlemen remain where they are, and then
there'll be no inquest, no publicity and no scandal."

"All right!" said Larose, "and we'll leave the searching of Dunwich Hall
until to-morrow. We'll put in our calls to town and then off we'll all
go to Saxmundham for a good meal and a night's rest. I'm worn out and
feel I'm going to drop."

Stone hesitated a moment, and then nodded in agreement. "Yes, to-morrow
will do," he said. "There's no hurry now."

He laid his hand upon Larose's arm. "But see here, have you got the
formula he'd written down?" and when Larose in answer produced the
wallet, and abstracted a blood-stained piece of paper for his
inspection, he shuddered and turned away his eyes. "Gilbert, Gilbert,"
he murmured, "so often are you the Angel of Death!"




CHAPTER XV.--"THE JEST OF LIFE"


Larose slept very badly that night. He was worried, and his thoughts
would allow him no peace. He was not worried that he had first goaded
Mitter to the point of frenzy and then had deliberatedly shot him
through the heart, when he might so easily have only wounded him and
then handed him over to the authorities.

He was not troubled there, for he knew Mitter was guilty of much more
than they would ever have been able to prove, and by himself acting as
judge and jury, as he had done, he had punished according to all canons
of Justice; whereas Mitter's punishment by law would have certainly
fallen far short of his deserts, and undoubtedly have been purged by a
term of imprisonment only.

But it was about Margaret Advent he was so troubled, for when he had
come to consider all that was in store for the girl, he felt profoundly
sorry for her. She would, of course, have to be put on trial for
complicity with Mitter, in the latter's work as a spy, and to whatsoever
extent she was found to be implicated, it would, in any case, mean
goodbye for ever to her romance with young Lieutenant Fortescue.

He knew he would have liked to think of Margaret as deserving of all she
was now going to receive, and as a false little Jezebel who was only
trying to make good for herself by inveigling young Fortescue into
marrying her. But prejudiced as he was against her by the certain
knowledge that she had been tampering with Dempster's letters, he was,
somehow, unable to regard her in that light, for when from behind the
clump of rhododendrons he had been watching her that night, it had come
to him all suddenly as in a flash of intuition, that she was a good girl
of a nice nature, and no light-of-love who would throw herself from one
man to another, wherever she would get most of this world's pleasures.

He certainly could no longer visualise her as an unscrupulous schemer.
Naturally, she would be wanting to get young Fortescue for a husband, as
would not any girl in her position, but still, probably she was really
in love with him, and every woman was entitled to seize her happiness
when she could.

He nodded to himself here. No, he certainly did not pity young
Fortescue, for the girl was so pretty that any man might be proud to
have won her for a wife.

Then there was another aspect to everything that made Larose wish
Margaret Advent were not going to be drawn into the matter. But for her,
the story of Mitter's work as a spy, his torture of the professors, and
his own violent death, might never come under the blaze of a most
undesirable publicity, and the whole matter could have then been allowed
to die down, and perhaps even, the bodies of Mitter and his confederate
have never been recovered from the fallen masonry.

He, Larose, had told neither Stone, nor Carter, nor indeed anyone as yet
of the part Margaret had been taking in helping Mitter, and if no
mention were made of it now, everything could be hushed up, besides the
girl being allowed to go free.

But Larose shook his head here. He liked to round off all his cases
satisfactorily, and apart from that, the girl having been in Mitter's
confidence, she might know a lot about Mitter's secret agents, and the
information she could give be of incalculable value to the country.

He fell asleep at last and dreamed that he had kissed Margaret and
agreed to say nothing about her to anyone, and that his wife had been
very angry about it. But he told Helen the kiss had only been a fatherly
one, and given only in the way of pity. Then she said she quite
understood, and it was perfectly all right, and he had smiled when she
wasn't looking and then been very furious with himself.

The following morning, a few minutes before nine o'clock, Larose and the
two inspectors presented themselves at Dunwich Hall, and, finding the
door open walked unceremoniously in.

They had arranged their plan of campaign, and were intending that
nothing of what had really happened to Mitter and the supposed gardener
should come out. All at the Hall were to be led to believe that the two
had been arrested, but they were to be bound to silence about it to
outsiders.

The butler, hearing the sound of voices, appeared immediately, and his
face fell when he saw the little party.

"From Scotland Yard," said Larose, indicating the two inspectors, "and
we've come to make a search of the house." He turned to Stone and
Carter. "This is the Mr. Dempster who has been reporting to the
Intelligence Department."

Stone gave the butler a friendly nod. "And we can be sure then," he
said, "that he will help us in every way he can."

"But the master is not at home," gasped Dempster, "and----"

"We know that," interrupted Stone dryly, "and, what's more, he never
will be again. You won't be seeing either Herr Mitter or his gardener
any more."

Dempster at once went ghastly pale, but Larose patted him reassuringly
upon the shoulder. "Never mind, my friend," he said kindly, "the Herr is
much worse than any of us thought. He is a cruel and dreadful man, and
it's a good thing for everyone that he has gone away." He spoke in crisp
and business-like tones. "Now, you show these gentlemen where everything
is. We'll examine the study first."

With a most unhappy expression upon his face, Dempster led the way to
the study, with Larose hanging back and going last. Then when the
Scotland Yard inspectors were inside the room, Larose said carelessly.
"Well, I'll leave you for a few minutes, for I want to make a little
investigation outside," and with a slight movement of the head to
Dempster, he left the room.

The butler followed him, and then directly they were in the hall, Larose
whispered sharply. "I want to speak to Miss Advent at once. Bring her to
me in the morning room."

"But when did they take the master?" asked Dempster, with a catch in his
voice. "It seems so dreadful to me!"

"Last night," said Larose, "when he was coming back from his walk, they
took Sullivan, too. You'll hear all about it in a few minutes." He
looked intently at the butler and lowered his voice confidingly. "Now,
see here Dempster. I think it will be best for you to say nothing at all
to these gentlemen about Miss Advent having been on such friendly terms
with Herr Mitter, and tell your wife not to mention it, either, when
they come to question her." He shook his head. "We don't want to make it
unpleasant for the girl."

"Certainly not, sir," replied the butler, "and I'll say nothing about
it." He looked round to see that they were not being overheard. "But
she's leaving here this morning, sir. She's going up to London by the
eleven o'clock train and she's packing her box now."

"What!" exclaimed Larose, "leaving here! Then does Herr Mitter know?"

The butler shook his head. "No, sir. I'm almost sure he doesn't. She's
only just told us half an hour ago." He looked very puzzled. "She knew
the master did not come home last night, and I rather thinks she wants
to get away before he returns."

Larose frowned. "Well, you go and fetch her now and don't forget what
I've told you."

Margaret came into the room, looking pale and agitated, and she shut the
door quickly behind her.

"Oh! Mr. Larose, tell me what's happened," she said breathlessly. "Has
Herr Mitter really been taken away?"

Larose regarded her with a grim smile. "Well, everyone's not going to be
told that," he said, "but with your knowledge of what Herr Mitter has
been doing, I won't attempt to deceive you." He nodded. "Yes, he's gone
and you won't be seeing him any more."

"And--" Margaret hesitated, "--and anyone else?" she asked, her voice
trembling.

Larose laughed unpleasantly. "The gardener!" he said. "Yes, he's gone,
too. They both went together." He pointed to a chair. "But you sit down,
please. I want to talk to you." His face hardened and his voice became
very stern. "Now, you look here, young lady, the sooner you realise your
position, the better it will be for you. You understand?"

Her face at once lost something of its frightened look, and, steadying
herself, she answered with a brave attempt at dignity. "No, I don't.
What do you mean?"

"In about ten minutes," replied Larose impressively, "those detectives
from Scotland Yard are going to start questioning you, and in half an
hour I'm very much afraid you'll be under arrest and charged with spying
under the direction of Herr Mitter."

"Oh!" came a startled exclamation from the girl, and her voice choked
"but I've done nothing."

"Haven't you?" asked Larose scoffingly. "Think again, Miss Advent. What
about those letters of Mr. Dempster you've been getting hold of and
telling their contents to Herr Mitter?"

The girl's teeth snapped viciously. "You prove it," she said angrily.
"You only overhead what Herr Mitter asked me that night when you had
crept into the house like a common thief." Her eyes blazed. "And if I
deny it, it will only be your word against mine. You can't prove it."

If Larose had been by himself he would have whistled, but instead, he
looked very astonished and then he asked with a frown: "What do you know
about my coming into the house any night?"

Margaret laughed scornfully. "Everything," she replied, enjoying his
discomfiture. She nodded calmly. "That Mr. Dempster let you in through
one window, and that you let yourself out through another, and that in
between you picked one of Herr Mitter's pockets of a letter that he
missed directly he went into his bedroom." She dropped her voice to a
whisper. "Oh, yes, I know a lot about you, Mr. Larose, and, really, you
ought to be very grateful to me, for I've befriended you more than
once." She shook her head. "But I can keep a secret as well as anyone,
and I'm not going to speak."

Larose could not contain his surprise. "What on earth do you mean?" he
asked. "How have you befriended me?"

But Margaret shook her head again. "I'm not going to bring any charges
against anyone," she said. "I don't want to be mixed up in anything. I
was leaving here, at any rate, today, and shall be glad to be out of all
the mess."

"Not so fast, Miss Margaret," said Larose sharply, "not so fast. I warn
you. I tell you we are going to bring charges against you and you'll
have to give some very unusual explanation if you're going to be allowed
to go free."

The girls assurance left her at the grimness of his words and her face
went pale again. "But you really can't be going to arrest me!" she
exclaimed. "You've nothing against me!"

"That remains to be seen," nodded Larose, "when you've explained certain
things that have been happening here."

"But the scandal!" exclaimed Margaret plaintively. "It will ruin all my
life!"

Larose shrugged his shoulders. "I'm afraid no gentleman holding a
commission under His Majesty will want to marry you, if that's what you
mean"--he looked very hard at her--"Lieutenant Fortescue, for instance!"

Margaret winced and seemed now on the verge of tears. "Oh! then you know
about him?" she asked, and when Larose nodded, she pulled herself
together and demanded fiercely: "And what price am I to pay if you leave
me alone?"' Her voice rose in contempt. "You have not got me here, by
myself, for nothing. You must have something on your mind."

Larose felt very sorry for her distress. He had been trying to bully
her, he knew, and it was contrary to his nature to act the bully at any
time.

"Look here, Miss Advent," he said kindly, "you say you've been my
friend, and I assure you I now want to be yours. So let's be quite frank
with one another and show down all our cards." He smiled as if he were
amused. "Now, do you agree?"

"Put yours down first," smiled back the girl, but her smile was a very
sarcastic one. "I'll see if you've got anything of a hand." She looked
him straight in the face. "I've done very little wrong, and that,
through ignorance, so I'm not afraid of you."

Her insistence impressed Larose favorably and he spoke pleasantly and
without the slightest trace of antagonism.

"Well, we've two things against you," he began, "or rather I have two
things against you, for as yet I have said nothing about them to anyone.
The first--knowing Herr Mitter to be a spy you have got hold of
Dempster's letters for him, and the second--" his voice was very
solemn--"for many months now you have been conniving at another man
taking Herr Mitter's place in this house, while Mitter himself was away,
spying as an enemy to this country."

Margaret seemed in no way nonplussed. "When I was suspecting him of
being a spy I never stirred a finger to help him," she retorted sharply.
"You heard that night how vexed he was with me because I made out I
couldn't get hold of Mr. Dempster's letters any more." Her voice was
scornful. "As for the conniving you talk about, well, I was a paid
servant here and, as I've told you, I can hold my tongue. It was not my
business what he went away for, and until recently I gave no thought to
what his work was. Herr Mitter trusted me and in return I kept my mouth
shut."

"And who is this gardener then" asked Larose. "Is he his brother?"

Margaret hesitated. "But you are asking me things now," she said. She
smiled ironically. "Have you put down all your cards?"

Larose, frowningly ignored her question. "Listen, Miss Advent," he said.
"You can make it so much easier for us, if you will--and to your own
advantage, too. We want, to learn all the hidden life of this Carl
Mitter. We have found out a great deal, but there are gaps that you may
be able to fill in." He shook his head. "With all his charming ways.
Mitter was an evil and cruel man, and----"

"Was?" queried Margaret and a startled look came into her eyes. "Was?"
Her voice was so faint now that Larose had to bend forward to catch what
she was saying. "Do you mean to tell me that he's dead?"

Larose took a sudden resolution. He was getting nothing out of the girl.
Time was flying and any moment now she might be called for by the
detectives. He could see she was of strong character and could be
depended upon to hold her tongue. Well then, he would trust her.

He nodded. "Yes, he is dead." He said solemnly, "and the other man is
dead, too. They both died last night and that is why we are here."

"Oh, how awful!" wailed the girl. "How did they come to die?"

"By violent means," said Larose, "by deaths that they deserved, for they
were dangerous enemies to the country and one, or both of them, were
callous murderers." He shook his head. "You needn't grieve for them."

"I don't," choked Margaret. "I liked Herr Mitter very much, once, but
lately things have been different, and I've learnt a lot and become
afraid of both of them. I believe they were intending harm to me and
that's why I was leaving so hurriedly this morning, to get away before
either of them came back."

"Well, you can speak freely now," said Larose, "for you can't harm them.
Now tell me who was this gardener, everyone knew as Sullivan?"

"His--" began Margaret and then she hesitated and looked doubtfully at
Larose. "But how do I know," she said, "that you are telling me----"

"The truth," broke in Larose. He put his hand in his pocket and drew out
a carefully folded packet that he proceeded to unwrap. Then he exposed a
part of the wallet he had taken off the dead man. "Don't you recognise
this?" he asked sharply, with his eyes fixed intently upon her.

"Yes," she faltered, "it's Herr Mitter's."

He exposed the whole wallet and pointed to the hole the bullet had made,
a hole surrounded by a dreadful-looking stain. "That's how he died," he
said. "He was shot through the heart." His voice was low and menacing.
"Mind you, I'm trusting you, as I expert you now to trust me. No one
must know what I'm showing you, not even Mr. Fortescue. You understand?"

Margaret had closed her eyes. "Yes," she said faintly. "I understand. I
won't tell anyone." She shuddered. "Oh! Put it away!"

"Now," said Larose, when he had re-wrapped the wallet and restored it to
his pocket, "who was the gardener man?"

"His half-brother, Bernhard Mitter," she whispered. "They were sons of
the same father. They were very much alike, when they were not made up
in any disguise."

"And how long has this been going on," asked Larose, "this
under-studying of Carl by Bernhard?"

"I don't know," replied Margaret. "I've only known of it myself for a
little longer than six months." Her voice gained in strength. "You see,
Mr. Larose, when I came here Herr Mitter was very kind to me, and seeing
I was fairly well educated, he started training me to be his secretary.
Then when he saw I kept myself away from the other servants, he began to
trust me, and I did lots of little private things for him. Then one day
he told me he was a political agent for his country, and was only living
over here to find out how many ships England was building and things
like that. He said every nation had men like him working in every
country, and there was no harm in it, although, of course, he would be
punished if he were found out. Then one night I came into his studio,
unexpectedly, when he had forgotten to lock the door, and I saw
Bernhard, as his brother, for the first time. They were taken by
surprise and then, at first, Bernhard looked as if he would like to kill
me. He----"

"But why?" interrupted Larose. "You didn't realise then that he was the
gardener!"

"Oh! but I did," replied Margaret, "for he was dressed in Sullivan's
clothes and, besides, he was holding Sullivan's red beard in his hand.
He had torn it, accidentally, I learnt afterwards, and had come in to
tell Herr Mitter another one must be got at once."

"How had he come into the studio"' asked Larose.

"In the way he always came," said Margaret, "through a door hidden
behind the coats in the big cupboard at the end of the studio. This door
opens into the alley between the old Priory walls, where no one ever
goes. You can see the door, outside, but it's supposed to be walled up
and no one knows it can be opened."

"Go on," said Larose. "What happened then?"

"Bernhard was very frightened, but Herr Mitter only laughed and said it
was quite safe and I should never tell. Then he made me sit down and we
all had a long talk together, and they told me that they had found out
Dempster was paid to write to someone all that went on here, and they
asked me to get hold of his letters and read them. I didn't like it at
first, but when I read one letter and saw what they had said was quite
true, I felt justified in opening every one I could get hold of."

"And you have done that all along?" asked Larose frowning.

Margaret shook her head. "No, but I've done it up to a little while ago,
and then I stopped and made excuses that I couldn't get them, and it
made Herr Mitter very angry. I know he didn't believe me."

"But why did you stop opening the letters?" asked Larose.

Margaret hesitated. "Well," she said slowly, "Mr. Fortescue happened to
say that foreign countries had got people working all over England,
trying to find out the secret of those invisible aeroplanes, for it was
only those aeroplanes that stood between us and another awful war. Then
I realised what Herr Mitter must be doing, and resolved not to help him
any more."

A short silence followed and then Larose asked. "What did you mean by
saying you had lately become frightened of Herr Mitter? What have you
found out he's done?"

Margaret smiled. "That day you stayed to lunch I saw him take something
out of his medicine cupboard," she said, "from the place where I knew he
usually kept a bottle of belladonna, and then I saw him pour some liquid
into your glass of wine, when he was kneeling before the fire. That was
why I told you there was cork in your wine and emptied it away."

"Oh! oh!" exclaimed Larose in great astonishment, "then I have to thank
you for that!"

"Yes," said Margaret calmly, "and as I had seen Sullivan doing something
underneath your car--when he had gone I took out one of your tools and
put it upon the seat for you to notice. I thought perhaps it would make
you suspicious."

"By Gad and it did!" exclaimed Larose. His face broke into a warm smile.
"You're a good girl Margaret, and I'm very pleased I got this talk with
you." He nodded. "Now, I'll keep you out of everything, as much as I
can." He went on. "But do you know the names of anyone who's been
working for Mitter?"

"Only one person," replied Margaret, "and I heard that about a fortnight
ago when I was taking some glasses into the studio one night. They were
whispering together and I caught something about a Captain Nathanial and
some plans he had sent them." She heaved a big sigh. "That's all I know
about anything."

"Good!" exclaimed Larose, "then this gentleman shall be looked up and
caught out somehow. One more question, now. Which of them was Dr.
Smith?"

Margaret looked very puzzled. "I've never heard of him," she said,
shaking her head. "He's never been here that I know of."

"Well, which of the two was in the habit of going up to London," asked
Larose, "sometimes upon every day of one week?"

"It might have been either of them," replied Margaret, "or perhaps both,
or they may have taken it in turns. Bernhard, like Herr Mitter, was
often away for a whole week at a time. Every one then supposed he had
gone on the drink."

They talked on for a few minutes and then Larose said very earnestly.
"Now it's a good thing you've been quite frank with me, for I see no
reason at all why you should be dragged into the business"--he looked
very serious--"but you're not quite out of the wood yet. You're going to
be questioned by two of the shrewdest men in Scotland Yard, and you must
be careful that nothing you have just told me, comes out. Just answer
the question they put to you, and say as little as you can. Volunteer
nothing on your own, and know nothing about this Bernhard. Just appear
to be what they think you are, an ordinary parlormaid and not too
intelligent. You understand?"

She nodded. "And do you think I shall be able to go away this morning as
I intended?" she asked.

"Yes, if you don't make a slip and they become suspicious," said Larose.
He shook hands with her, warmly. "I am very grateful to you and, as I
say, I'll help you all I can."

In the meantime, the butler had been having an uncomfortable time, for
he had been told plainly by the inspectors that he must be somewhat of a
fool. He had been flabbergasted when he had been informed that all the
time it was the gardener, Sullivan, upon whom he had been waiting, when
his master had been supposed to be so engrossed upon his painting, and
he had been upon the point of excusing himself by telling them that
Margaret had been deceived also. But he remembered Larose warning and,
at some strain of his dignity, kept silent. He was very relieved when at
last, very discomforted and all clammy with perspiration, he was allowed
to leave the room.

Larose had returned to the others by the time Margaret was called in.
Stone elevated his eyebrows and made a half wink at Larose as she
entered the room. "Something snappy," he whispered, "and looks very
intelligent. We ought to learn something here."

It was Carter who first took Margaret in hand, telling her that her
master having gone away, and there being certain reasons to think he
would not be returning, they were desirous of finding out all they could
about his ways and the people who were accustomed to visit the Hall.

"Now first, when did you see your master last?" he asked.

"On--" began Margaret, hesitatingly to the horrified dismay of Larose,
who saw Stone frown and his eyebrows come together with a click, "--on
the stroke of half past seven last night when I had cleared away the
dinner things, and was leaving the studio."

"You are very exact, Miss Advent," smiled Carter, who was apparently
drawing nothing from the girl's hesitation and the framing of her
answer.

"Well, I remember hearing the clock strike," replied Margaret, "just as
I was closing the door."

"And had your master seemed in his usual spirits yesterday?" went on the
inspector.

Margaret shook her head. "He's never in good spirits when he's
painting," she replied, "and when the light fails, he seems exhausted
and quite worn out."

"Damn!" swore Larose under his breath, "if she goes on volunteering
information like that, she'll make a slip very soon!"

"Did he talk to you much yesterday?" asked Carter next.

"No, he hardly said a word."

"Didn't he say anything to you at all?"

Margaret considered. "Only that at dinner he told me he would be going
out later," she said, "and I was to leave the kettle on the hob, in case
he would be wanting any hot water."

"Did he look in good health yesterday?"

Margaret shook her head. "I don't think I noticed," she said. She gave a
faint shrug with her shoulders. "He seemed quite all right, for he was
smoking all day."

Then Carter asked her about the people who were accustomed to come to
the house, and at his request she wrote down as many of the names that
she could remember.

Then Stone took his turn at questioning her, and at once Larose felt
uncomfortable when he noticed the genial smile with which the inspector
was regarding her. He knew that smile so well, and that it boded no good
for anyone who was trying to keep anything back.

"And we understand you are leaving here this morning, Miss Advent," said
Stone. He elevated his eyebrows. "That is a rather sudden act on your
part, isn't it?"

"Yes," nodded Margaret. "I only made up my mind an hour ago."

"And what caused you to make it up so quickly?" he asked.

"I heard Herr Mitter had not been home all night. Mr. Dempster said his
bed had not been slept in, and I wanted to get away before he returned."

"Oh!" exclaimed Stone, and his eyebrows were elevated still higher,
"then your master does not know you are leaving?"

"Not that I am leaving today," replied Margaret promptly, "but he has
known for weeks, now, that I intended to go." She nodded. "But he wants
me to remain on, and has made no attempt to get anyone to fill my place.
He has kept on putting off the day when he can spare me."

"But what do you want to leave for, so urgently?" asked Stone. "This is
a comfortable place, is it not?"

"Very comfortable," replied Margaret, "or I shouldn't have stopped here
as I have done, for nearly two years. Herr Mitter has been very kind to
me. But I am leaving now to better myself. I'm not badly educated and
I'm going to take a course of training to become a secretary,
somewhere."

Stone frowned. "But isn't it rather ungracious," he said, "considering
Herr Mitter has been so kind to you, as you say, to be going away like
this, when you don't know what's happened to him? Of course, you've
heard he's gone off without taking a hat or an overcoat, and so he may
have met with some dreadful accident!"

Margaret shook her head. "I don't think so," she said. "Most likely he's
going fishing with the Dunwich fishermen and they'll have lent him
oilskins, and all he wants." She spoke quickly. "You see, sir, Herr
Mitter is very reserved at all times and never tells anyone what he's
going to do. So we are accustomed to his ways and take everything as it
comes. Sometimes he hardly speaks to us for days on end together."

"Hum!" remarked Stone rather dubiously, "then what did you think when
you heard we had arrived here, and Mr. Dempster told you we were from
the police?"

Margaret hesitated. "I didn't exactly know what to think."

"But you must have thought something," persisted Stone. "Something must
have flashed into your mind!"

"Oh! yes, something did," replied Margaret at once. "I know he is a
foreigner and I thought"--she hesitated--"I thought that perhaps he had
been interfering in political matters."

"And what do you mean by that?" asked Stone very sharply.

Again Margaret hesitated, but this time much longer. "Trying to find out
things he shouldn't," she replied at length as if choosing her words
with the utmost care.

"Spying! you mean?" rapped out Stone and his words came like a bullet
from a gun. "You mean he had been caught spying?" and when Margaret
nodded uncomfortably, he dropped his voice to stern and accusing tones.
"Then you had reason to believe, Miss Advent, that your master was a
spy?"

Larose was on tenter-hooks. The girl was so obviously becoming confused
and any moment now he expected her to break down. Then, to his great
relief, she drew up confidently and smiled as if she were amused.

"Good gracious! I'm hardly as imaginative as that," she laughed. "No,
but when I heard from Mr. Dempster that you were from the police, a
remark that a friend of mine had made some weeks ago when I was out with
him one night, instantly came back to me."

"And what was the remark?" asked Stone.

"That lots of foreigners over here would give anything to find out of
what those new aeroplanes of ours are made, and no doubt many things
were going on to try and get hold of the secret."

"And that remark of course," snapped Stone, "was made when you were
talking about Herr Mitter, and was a pointed reference to him."

"Oh! no it wasn't," replied Margaret instantly. "This gentleman knows
Herr Mitter and likes him very much."

"Who is the gentleman?" asked Stone instantly.

"But I'm not going to tell you that," said Margaret, shaking her head
determinedly. "There's no reason why I should," and then seeing that the
inspector was looking very stern and grim, she added with an arch smile.
"Mr. Larose knows who he is," and Larose although rather discomfited at
his name being brought in, at once nodded to Stone that her statement
was correct.

Inspector Stone did some quick thinking. The girl was exceptionally
pretty, some man had taken her out one night, Larose knew who the man
was, and now Larose himself was looking uncomfortable. Therefore, he,
Stone, guessed he knew who the man was, and he repressed a smile and
looked down his nose.

"Well, well," he said, after a long pause and he spoke much more quietly
now, "where is this training place you are going to?"

"In London," replied Margaret. "Collard's Business College, Gresham
street, City."

"But where will you be living? With your parents?" was the next
question.

Margaret shook her head. "I have no parents," she said. "I am an orphan.
No. I'm going to find lodgings somewhere."

Stone frowned again. "But if we want to speak to you," he said, "if we
want to ask you some more questions, how shall we get in touch with
you?"

For a few moments Margaret looked perplexed, and then she blushed and
her face broke into a smile. She nodded towards Larose. "Mr. Larose will
be able to tell you," she said. "He'll always know how to find me."

There was a dead silence then. Stone looked down his nose again, and
Larose felt himself getting rather red. "I think you'd better explain,
Miss Advent," he said with a frown, "and let these gentlemen understand
there is no mystery about anything."

Instantly Margaret sensed something of what was in the inspector's mind,
and her blush now became a furious one.

"I'm going to be married to this gentleman I've been speaking about,"
she said quickly, "and I don't want to give his name, simply because
he's in a much better station of life than I am. In fact he's an officer
in His Majesty's army and, naturally, he would not like everyone to know
he's marrying someone who's been in domestic service. Really, that's why
I'm leaving here and going to a training college. Mr. Larose happens to
know my friend and has been told by him about our intended marriage."
She turned to Larose. "That is so, is it not?"

Larose nodded. "Yes, it's quite all right, Inspector Stone," he said,
"and this young lady's fiance comes of a very distinguished family. His
name, of course, can be disclosed to you, if you wish, but I see no
reason for it."

The face of Stone was now all smiles and geniality. "Quite all right,
quite all right," he exclaimed, "and I'm sure I don't want to know. If
Mr. Larose says he can find you if you're wanted, then that's good
enough for anyone."

He asked Margaret a few more questions and then after an interchange of
glances with Inspector Carter, dismissed her with the smiling remark
that he was sure her fiance was a very lucky fellow.

Some two hours later, however, when Inspector Stone and the others were
interestedly regarding the great mass of fallen masonry, the inspector
squeezed Larose's arm and whispered with a chuckle.

"I'm not quite such an old fool as you may think, my boy, and I'm sure
that young lady could have told us much more than she did--and you know
it, too." He poked him in the ribs. "You may always represent justice,
Gilbert, but no one is better aware than I am that you don't always
represent law, and if I did my duty I should worry this pretty Miss
Margaret a great deal more." He stretched out one big, fat hand. "But
still, what's the good of swatting a butterfly with this"--his eyes
sparkled mischeviously--"and such a pretty butterfly too."

"You're a good fellow, Charlie," whispered back Larose, "and take it
from me, you're doing no wrong. That girl's as innocent as a baby, and
yet a lot of clumsy questioning might have ruined her whole life." He
nodded. "Maybe you'll see her again some day and then, won't you be
surprised!"

       *       *       *       *       *

The following week the staff at Dunwich Hall were paid off and the house
shut up. It was rumored Herr Mitter had been called abroad, and in the
absence of instructions from him, nothing was done to the ruins of the
chapel wall.

About a year and half later, Mr. and Mrs. Gilbert Larose were present
one night at the Royal Opera House in Covent Garden to hear the famous
Signor Aronelli in the role of Faust. The house was packed to its utmost
capacity, and they were occupying seats in the stalls.

Just before the curtain rose two men just in front of them started to
talk, and they overheard their conversation.

"My word!" exclaimed one of the men looking up at a box not very far
away, "but there's a lovely girl, if you like. I don't think I've ever
seen one more beautiful. I wonder who she is?"

The other man looked in the direction he indicated. "Oh! She's Lady
Fortescue," he said, "and that's her husband with her, the Baronet, Sir
Selby Fortescue. He came into the baronetcy about six months ago, when
his cousin, Wing-Commander Fortescue, crashed somewhere in Wales, and
the uncle died from shock almost immediately afterwards."

"Is she a bride?" asked the first man.

"Well, hardly," laughed the other. "She had a baby a little while back,
but still I don't think they've been married very long."

Mrs. Larose was most interested. "Did you hear that, Gilbert?" she
whispered, and when her husband had nodded, she looked very puzzled, and
went on, "but I seem to know her face, somewhere. I must have met her
somewhere, although it seems that I remember she was dressed very
differently, then."

Larose smiled to himself. "Perhaps it was at some fancy dress ball,
dear," he remarked. "I often can't place faces, myself."

"Oh! but she's looking our way," exclaimed Mrs. Larose. "She's bowing to
you, Gilbert!"

"So she is!" said Larose, and when he had bowed and smiled in return, he
whispered to his wife: "I think I must have met her that year at Lord
Batten's when you weren't with me."

"Well, you must have made an impression," whispered back Mrs. Larose as
the curtain began to rise, "for I saw she gave you a most lovely blush!"
She caressed her husband's hand in the darkness. "I shall still have to
look after you, I see, Gilbert."

       *       *       *       *       *

One afternoon a respectable-looking but very poorly dressed woman walked
up the steps of the Foundling Hospital. She was just beyond middle age,
but evidently had been attractive once, for she had refined, clear-cut
features and large, liquid grey eves. Her hands were small and finely
shaped. She appeared to be very nervous.

Asking to see the secretary, and being ushered into his presence, she
said she had come to make enquiries about a baby girl who had been left
there nearly twenty-four years previously.

She then proceeded to give particulars, but the secretary interrupted
her by asking upon whose behalf she had come.

"I've come for a friend," she faltered. "She's not able to come
herself."

The secretary shook his head. "Then I'm sorry," he said, "but I can't
tell you anything. Your friend must come herself and prove to our
satisfaction that she has the right to make the enquiries. We disclose
no information, generally, about any child that has been left here."

"But if she does come," asked the woman shakily, "do you think you would
be able to tell her what has become of the child and where she is now?"

The secretary looked doubtful. "Twenty-four years is a long time to go
back," he said, "and although we try to keep in touch with all our
children, we find so many of them as they prow up, prefer to forget all
about us." He shook his head. "They don't want it to be known they've
been left here."

The woman went out with a very downcast air, and at the street corner
was joined by a man about her own age. He, too, was poorly clad and if
his face had not looked drawn and pale, as if from ill-health, he would
certainly have been not unhandsome. She told him what had taken place.

"So you see it's no good, Jim," she said, "and we must leave it as it
is. They might imprison us if we admitted we had done it, and besides,
if we did find our baby she mightn't be pleased about it. We, certainly,
can't give her anything, and she may be much happier as she is." Her
eyes filled with tears. "It's our punishment, Jim."

"Well, never mind, Meg," said the man linking his arm affectionately in
hers. "We must try and find a bit of happiness for ourselves. Come on
back to that registry office now. Who knows we mayn't get a nice place
together in the country, and then you'll have a little garden with
flowers, and I'll be able to keep fowls. It's good country air I want,
and then I shall grow strong again."

       *       *       *       *       *

One afternoon, towards dusk, about a week later, when Lady Fortescue, in
her beautiful home in Sussex, was watching with adoring eyes the antics
of her little son who was lying upon a rug before the fire, the door of
the room opened and her husband entered.

"Hullo! Margaret," he exclaimed gaily, "baby-worshipping as usual!
Really, you'll quite spoil the little beggar and the sooner I give you
three or four to keep him company the better."

"Thank you, old dear," laughed his wife, putting up her face for him to
kiss, "but you'll kindly wait, please, until I ask you for them." She
drew back suddenly. "Oh! but I've something to tell you. I've engaged
the new lodge-keeper and his wife."

"The ones we heard about," enquired her husband, "the man who had been
ill and was once butler with Sir Pompey?"

"Yes, and they're such a nice old couple," said Lady Fortescue, "the
real old-fashioned sort. The man's so respectful, and the woman's got
such a nice face, although it's awfully sad. They've been married for
twenty years, but funnily enough have never managed to get in service
together, before. He's been ill and out of work lately, and, she's kept
him with her sewing. They're coming in to-morrow, and what do you
think?" Margaret shook her head. "It was quite pathetic. The poor old
fellow asked if he might keep a few fowls."

"Oh!" grunted the baronet, "and I suppose you promised him a dozen of my
prize Rhode Island Reds to start off with."

"No, not a dozen," smiled his wife, "only six!"

Sir Selby made a mock gesture of resignation. "Have your own way,
Margaret," he sighed, "as you always do."

"Oh! yes!" exclaimed Lady Fortescue, "and her name's Margaret, too,
although he calls her Meg."

"Dreadful," exclaimed her husband, "how people in that class so often
spoil beautiful names! Fancy anyone calling you Meg!" His face
brightened. "But I've got something to tell you. With whom do you think
I've been golfing this afternoon?"

"The old bishop, perhaps," suggested his wife, "in which case I hope you
didn't swear too much."

"No," laughed Sir Selby, "not the bishop, or the rector or the curate or
the doctor,"--he nodded impressively--"but with no less a person than
Gilbert Larose, and what's more, as he and his wife are staying with
Colonel Bevan, I asked the Colonel to bring them here to-morrow." He
looked intently at her. "You don't mind, do you, sweetheart?"

"Certainly not," she replied, although her face had flushed a little. "I
am sure Mr. Larose would never say anything, even to his wife."

"And I agree, darling. Men don't tell those sort of things, and although
I heard someone at the club say the other day that Mr. Larose ought to
have hanged many times for the things he's done, I have a very high
opinion of the lord of Carmel Abbey."

"And so have I," said Lady Fortescue solemnly. "I'd trust him with my
life, honor and everything." Her eyes took on a faraway look. "He's a
very just and human man."


THE END.



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