<h2><SPAN name="chap12"></SPAN>CHAPTER XII.<br/> A Shadow on the Wall</h2>
<p>In the twenty hours or so at his disposal Inspector Birch had been busy. He had
telegraphed to London a complete description of Mark in the brown flannel suit
which he had last been seen wearing; he had made inquiries at Stanton as to
whether anybody answering to this description had been seen leaving by the
4.20; and though the evidence which had been volunteered to him had been
inconclusive, it made it possible that Mark had indeed caught that train, and
had arrived in London before the police at the other end had been ready to
receive him. But the fact that it was market-day at Stanton, and that the
little town would be more full than usual of visitors, made it less likely that
either the departure of Mark by the 4.20, or the arrival of Robert by the 2.10
earlier in the afternoon, would have been particularly noticed. As Antony had
said to Cayley, there would always be somebody ready to hand the police a
circumstantial story of the movements of any man in whom the police were
interested.</p>
<p>That Robert had come by the 2.10 seemed fairly certain. To find out more about
him in time for the inquest would be difficult. All that was known about him in
the village where he and Mark had lived as boys bore out the evidence of
Cayley. He was an unsatisfactory son, and he had been hurried off to Australia;
nor had he been seen since in the village. Whether there were any more
substantial grounds of quarrel between the two brothers than that the younger
one was at home and well-to-do, while the elder was poor and an exile, was not
known, nor, as far as the inspector could see, was it likely to be known until
Mark was captured.</p>
<p>The discovery of Mark was all that mattered immediately. Dragging the pond
might not help towards this, but it would certainly give the impression in
court to-morrow that Inspector Birch was handling the case with zeal. And if
only the revolver with which the deed was done was brought to the surface, his
trouble would be well repaid. “Inspector Birch produces the weapon”
would make an excellent headline in the local paper.</p>
<p>He was feeling well-satisfied with himself, therefore, as he walked to the
pond, where his men were waiting for him, and quite in the mood for a little
pleasant talk with Mr. Gillingham and his friend, Mr. Beverley. He gave them a
cheerful “Good afternoon,” and added with a smile, “Coming to
help us?”</p>
<p>“You don’t really want us,” said Antony, smiling back at him.</p>
<p>“You can come if you like.”</p>
<p>Antony gave a little shudder.</p>
<p>“You can tell me afterwards what you find,” he said. “By the
way,” he added, “I hope the landlord at ‘The George’
gave me a good character?”</p>
<p>The Inspector looked at him quickly.</p>
<p>“Now how on earth do you know anything about that?”</p>
<p>Antony bowed to him gravely.</p>
<p>“Because I guessed that you were a very efficient member of the
Force.”</p>
<p>The inspector laughed.</p>
<p>“Well, you came out all right, Mr. Gillingham. You got a clean bill. But
I had to make certain about you.”</p>
<p>“Of course you did. Well, I wish you luck. But I don’t think
you’ll find much at the pond. It’s rather out of the way,
isn’t it, for anybody running away?”</p>
<p>“That’s just what I told Mr. Cayley, when he called my attention to
the pond. However, we shan’t do any harm by looking. It’s the
unexpected that’s the most likely in this sort of case.”</p>
<p>“You’re quite right, Inspector. Well, we mustn’t keep you.
Good afternoon,” and Antony smiled pleasantly at him.</p>
<p>“Good afternoon, sir.”</p>
<p>“Good afternoon,” said Bill.</p>
<p>Antony stood looking after the Inspector as he strode off, silent for so long
that Bill shook him by the arm at last, and asked him rather crossly what was
the matter.</p>
<p>Antony shook his head slowly from side to side.</p>
<p>“I don’t know; really I don’t know. It’s too devilish
what I keep thinking. He can’t be as cold-blooded as that.”</p>
<p>“Who?”</p>
<p>Without answering, Antony led the way back to the garden-seat on which they had
been sitting. He sat there with his head in his hands.</p>
<p>“Oh, I hope they find something,” he murmured. “Oh, I hope
they do.”</p>
<p>“In the pond?”</p>
<p>“Yes.”</p>
<p>“But what?”</p>
<p>“Anything, Bill; anything.”</p>
<p>Bill was annoyed. “I say, Tony, this won’t do. You really
mustn’t be so damn mysterious. What’s happened to you
suddenly?”</p>
<p>Antony looked up at him in surprise.</p>
<p>“Didn’t you hear what he said?”</p>
<p>“What, particularly?”</p>
<p>“That it was Cayley’s idea to drag the pond.”</p>
<p>“Oh! Oh, I say!” Bill was rather excited again. “You mean
that he’s hidden something there? Some false clue which he wants the
police to find?”</p>
<p>“I hope so,” said Antony earnestly, “but I’m
afraid—” He stopped short.</p>
<p>“Afraid of what?”</p>
<p>“Afraid that he hasn’t hidden anything there. Afraid
that—”</p>
<p>“Well?”</p>
<p>“What’s the safest place in which to hide anything very
important?”</p>
<p>“Somewhere where nobody will look.”</p>
<p>“There’s a better place than that.”</p>
<p>“What?”</p>
<p>“Somewhere where everybody has already looked.”</p>
<p>“By Jove! You mean that as soon as the pond <i>has</i> been dragged,
Cayley will hide something there?”</p>
<p>“Yes, I’m afraid so.”</p>
<p>“But why afraid?”</p>
<p>“Because I think that it must be something very important, something
which couldn’t easily be hidden anywhere else.”</p>
<p>“What?” asked Bill eagerly.</p>
<p>Antony shook his head.</p>
<p>“No, I’m not going to talk about it yet. We can wait and see what
the Inspector finds. He may find something—I don’t know
what—something that Cayley has put there for him to find. But if he
doesn’t, then it will be because Cayley is going to hide something there
to-night.”</p>
<p>“What?” asked Bill again.</p>
<p>“You will see what, Bill,” said Antony; “because we shall be
there.”</p>
<p>“Are we going to watch him?”</p>
<p>“Yes, if the Inspector finds nothing.”</p>
<p>“That’s good,” said Bill.</p>
<p>If it were a question of Cayley or the Law, he was quite decided as to which
side he was taking. Previous to the tragedy of yesterday he had got on well
enough with both of the cousins, without being in the least intimate with
either. Indeed, of the two he preferred, perhaps, the silent, solid Cayley to
the more volatile Mark. Cayley’s qualities, as they appeared to Bill, may
have been chiefly negative; but even if this merit lay in the fact that he
never exposed whatever weaknesses he may have had, this is an excellent quality
in a fellow-guest (or, if you like, fellow-host) in a house where one is
continually visiting. Mark’s weaknesses, on the other hand, were very
plain to the eye, and Bill had seen a good deal of them.</p>
<p>Yet, though he had hesitated to define his position that morning in regard to
Mark, he did not hesitate to place himself on the side of the Law against
Cayley. Mark, after all, had done him no harm, but Cayley had committed an
unforgivable offence. Cayley had listened secretly to a private conversation
between himself and Tony. Let Cayley hang, if the Law demanded it.</p>
<p>Antony looked at his watch and stood up.</p>
<p>“Come along,” he said. “It’s time for that job I spoke
about.”</p>
<p>“The passage?” said Bill eagerly.</p>
<p>“No; the thing which I said that I had to do this afternoon.”</p>
<p>“Oh, of course. What is it?”</p>
<p>Without saying anything, Antony led the way indoors to the office.</p>
<p>It was three o’clock, and at three o’clock yesterday Antony and
Cayley had found the body. At a few minutes after three, he had been looking
out of the window of the adjoining room, and had been surprised suddenly to
find the door open and Cayley behind him. He had vaguely wondered at the time
why he had expected the door to be shut, but he had had no time then to worry
the thing out, and he had promised himself to look into it at his leisure
afterwards. Possibly it meant nothing; possibly, if it meant anything, he could
have found out its meaning by a visit to the office that morning. But he had
felt that he would be more likely to recapture the impressions of yesterday if
he chose as far as possible the same conditions for his experiment. So he had
decided that three o’clock that afternoon should find him once more in
the office.</p>
<p>As he went into the room, followed by Bill, he felt it almost as a shock that
there was now no body of Robert lying there between the two doors. But there
was a dark stain which showed where the dead man’s head had been, and
Antony knelt down over it, as he had knelt twenty-four hours before.</p>
<p>“I want to go through it again,” he said. “You must be
Cayley. Cayley said he would get some water. I remember thinking that water
wasn’t much good to a dead man, and that probably he was only too glad to
do anything rather than nothing. He came back with a wet sponge and a
handkerchief. I suppose he got the handkerchief from the chest of drawers. Wait
a bit.”</p>
<p>He got up and went into the adjoining room; looked round it, pulled open a
drawer or two, and, after shutting all the doors, came back to the office.</p>
<p>“The sponge is there, and there are handkerchiefs in the top right-hand
drawer. Now then, Bill, just pretend you’re Cayley. You’ve just
said something about water, and you get up.”</p>
<p>Feeling that it was all a little uncanny, Bill, who had been kneeling beside
his friend, got up and walked out. Antony, as he had done on the previous day,
looked up after him as he went. Bill turned into the room on the right, opened
the drawer and got the handkerchief, damped the sponge and came back.</p>
<p>“Well?” he said wonderingly.</p>
<p>Antony shook his head.</p>
<p>“It’s all different,” he said. “For one thing, you made
a devil of a noise and Cayley didn’t.”</p>
<p>“Perhaps you weren’t listening when Cayley went in?”</p>
<p>“I wasn’t. But I should have heard him if I could have heard him,
and I should have remembered afterwards.”</p>
<p>“Perhaps Cayley shut the door after him.”</p>
<p>“Wait!”</p>
<p>He pressed his hand over his eyes and thought. It wasn’t anything which
he had heard, but something which he had seen. He tried desperately hard to see
it again.... He saw Cayley getting up, opening the door from the office,
leaving it open and walking into the passage, turning to the door on the right,
opening it, going in, and then—What did his eyes see after that? If they
would only tell him again!</p>
<p>Suddenly he jumped up, his face alight. “Bill, I’ve got it!”
he cried.</p>
<p>“What?”</p>
<p>“The shadow on the wall! I was looking at the shadow on the wall. Oh,
ass, and ten times ass!”</p>
<p>Bill looked uncomprehendingly at him. Antony took his arm and pointed to the
wall of the passage.</p>
<p>“Look at the sunlight on it,” he said. “That’s because
you’ve left the door of that room open. The sun comes straight in through
the windows. Now, I’m going to shut the door. Look! D’you see how
the shadow moves across? That’s what I saw—the shadow moving across
as the door shut behind him. Bill, go in and shut the door behind
you—quite naturally. Quick!”</p>
<p>Bill went out and Antony knelt, watching eagerly.</p>
<p>“I thought so!” he cried. “I knew it couldn’t have been
that.”</p>
<p>“What happened?” said Bill, coming back.</p>
<p>“Just what you would expect. The sunlight came, and the shadow moved back
again—all in one movement.”</p>
<p>“And what happened yesterday?”</p>
<p>“The sunlight stayed there; and then the shadow came very slowly back,
and there was no noise of the door being shut.”</p>
<p>Bill looked at him with startled eyes.</p>
<p>“By Jove! You mean that Cayley closed the door afterwards as an
afterthought—and very quietly—so that you couldn’t
hear?”</p>
<p>Antony nodded.</p>
<p>“Yes. That explains why I was surprised afterwards when I went into the
room to find the door open behind me. You know how those doors with springs on
them close?”</p>
<p>“The sort which old gentlemen have to keep out draughts?”</p>
<p>“Yes. Just at first they hardly move at all, and then very, very slowly
they swing to— well, that was the way the shadow moved, and
subconsciously I must have associated it with the movement of that sort of
door. By Jove!” He got up, and dusted his knees. “Now, Bill, just
to make sure, go in and close the door like that. As an afterthought, you know;
and very quietly, so that I don’t hear the click of it.”</p>
<p>Bill did as he was told, and then put his head out eagerly to hear what had
happened.</p>
<p>“That was it,” said Antony, with absolute conviction. “That
was just what I saw yesterday.” He came out of the office, and joined
Bill in the little room.</p>
<p>“And now,” he said, “let’s try and find out what it was
that Mr. Cayley was doing in here, and why he had to be so very careful that
his friend Mr. Gillingham didn’t overhear him.”</p>
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