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<h2> CHAPTER XXII. Mr. Beverley Moves On </h2>
<p>"Good Lord!" said Bill, as he put down the letter.</p>
<p>"I thought you'd say that," murmured Antony.</p>
<p>"Tony, do you mean to say that you knew all this?"</p>
<p>"I guessed some of it. I didn't quite know all of it, of course."</p>
<p>"Good Lord!" said Bill again, and returned to the letter. In a moment he
was looking up again. "What did you write to him? Was that last night?
After I'd gone into Stanton?"</p>
<p>"Yes."</p>
<p>"What did you say? That you'd discovered that Mark was Robert?"</p>
<p>"Yes. At least I said that this morning I should probably telegraph to Mr.
Cartwright of Wimpole Street, and ask him to—"</p>
<p>Bill burst in eagerly on the top of the sentence. "Yes, now what was all
that about? You were so damn Sherlocky yesterday all of a sudden. We'd
been doing the thing together all the time, and you'd been telling me
everything, and then suddenly you become very mysterious and private and
talk enigmatically—is that the word?—about dentists and
swimming and the 'Plough and Horses,' and—well, what was it all
about? You simply vanished out of sight; I didn't know what on earth we
were talking about."</p>
<p>Antony laughed and apologized.</p>
<p>"Sorry, Bill. I felt like that suddenly. Just for the last half-hour; just
to end up with. I'll tell you everything now. Not that there's anything to
tell, really. It seems so easy when you know it—so obvious. About
Mr. Cartwright of Wimpole Street. Of course he was just to identify the
body."</p>
<p>"But whatever made you think of a dentist for that?"</p>
<p>"Who could do it better? Could you have done it? How could you? You'd
never gone bathing with Mark; you'd never seen him stripped. He didn't
swim. Could his doctor do it? Not unless he'd had some particular
operation, and perhaps not then. But his dentists could—at any time,
always—if he had been to his dentist fairly often. Hence Mr.
Cartwright of Wimpole Street."</p>
<p>Bill nodded thoughtfully and went back again to the letter.</p>
<p>"I see. And you told Cayley that you were telegraphing to Cartwright to
identify the body?"</p>
<p>"Yes. And then of course it was all up for him. Once we knew that Robert
was Mark we knew everything."</p>
<p>"How did you know?"</p>
<p>Antony got up from the breakfast table and began to fill his pipe.</p>
<p>"I'm not sure that I can say, Bill. You know those problems in Algebra
where you say, 'Let x be the answer,' and then you work it out and find
what x is. Well, that's one way; and another way, which they never give
you any marks for at school, is to guess the answer. Pretend the answer is
4—well, will that satisfy the conditions of the problem? No. Then
try 6; and if 6 doesn't either, then what about 5?—and so on. Well,
the Inspector and the Coroner and all that lot had guessed their answer,
and it seemed to fit, but you and I knew it didn't really fit; there were
several conditions in the problem which it didn't fit at all. So we knew
that their answer was wrong, and we had to think of another—an
answer which explained all the things which were puzzling us. Well, I
happened to guess the right one. Got a match?"</p>
<p>Bill handed him a box, and he lit his pipe.</p>
<p>"Yes, but that doesn't quite do, old boy. Something must have put you on
to it suddenly. By the way, I'll have my matches back, if you don't mind."</p>
<p>Antony laughed and took them out of his pocket.</p>
<p>"Sorry.... Well then, let's see if I can go through my own mind again, and
tell you how I guessed it. First of all, the clothes."</p>
<p>"Yes?"</p>
<p>"To Cayley the clothes seemed an enormously important clue. I didn't quite
see why, but I did realize that to a man in Cayley's position the smallest
clue would have an entirely disproportionate value. For some reason, then,
Cayley attached this exaggerated importance to the clothes which Mark was
wearing on that Tuesday morning; all the clothes, the inside ones as well
as the outside ones. I didn't know why, but I did feel certain that, in
that case, the absence of the collar was unintentional. In collecting the
clothes he had overlooked the collar. Why?"</p>
<p>"It was the one in the linen-basket?"</p>
<p>"Yes. It seemed probable. Why had Cayley put it there? The obvious answer
was that he hadn't. Mark had put it there. I remembered what you told me
about Mark being finicky, and having lots of clothes and so on, and I felt
that he was just the sort of man who would never wear the same collar
twice." He paused, and then asked, "Is that right, do you think?"</p>
<p>"Absolutely," said Bill with conviction.</p>
<p>"Well, I guessed it was. So then I began to see an x which would fit just
this part of the problem—the clothes part. I saw Mark changing his
clothes; I saw him instinctively dropping the collar in the linen-basket,
just as he had always dropped every collar he had ever taken off, but
leaving the rest of the clothes on a chair in the ordinary way; and I saw
Cayley collecting all the clothes afterwards—all the visible clothes—and
not realizing that the collar wasn't there."</p>
<p>"Go on," said Bill eagerly.</p>
<p>"Well, I felt pretty sure about that, and I wanted an explanation of it.
Why had Mark changed down there instead of in his bedroom? The only answer
was that the fact of his changing had to be kept secret. When did he
change? The only possible time was between lunch (when he would be seen by
the servants) and the moment of Robert's arrival. And when did Cayley
collect the clothes in a bundle? Again, the only answer was 'Before
Robert's arrival.' So another x was wanted—to fit those three
conditions."</p>
<p>"And the answer was that a murder was intended, even before Robert
arrived?"</p>
<p>"Yes. Well now, it couldn't be intended on the strength of that letter,
unless there was very much more behind the letter than we knew. Nor was it
possible a murder could be intended without any more preparation than the
changing into a different suit in which to escape. The thing was too
childish. Also, if Robert was to be murdered, why go out of the way to
announce his existence to you all—even, at the cost of some trouble,
to Mrs. Norbury? What did it all mean? I didn't know. But I began to feel
now that Robert was an incident only; that the plot was a plot of Cayley's
against Mark—either to get him to kill his brother, or to get his
brother to kill him—and that for some inexplicable reason Mark
seemed to be lending himself to the plot." He was silent for a little, and
then said, almost to himself, "I had seen the empty brandy bottles in that
cupboard."</p>
<p>"You never said anything about them" complained Bill.</p>
<p>"I only saw them afterwards. I was looking for the collar, you remember.
They came back to me afterwards; I knew how Cayley would feel about it....
Poor devil!"</p>
<p>"Go on," said Bill.</p>
<p>"Well, then, we had the inquest, and of course I noticed, and I suppose
you did too, the curious fact that Robert had asked his way at the second
lodge and not at the first. So I talked to Amos and Parsons. That made it
more curious. Amos told me that Robert had gone out of his way to speak to
him; had called to him, in fact. Parsons told me that his wife was out in
their little garden at the first lodge all the afternoon, and was certain
that Robert had never come past it. He also told me that Cayley had put
him on to a job on the front lawn that afternoon. So I had another guess.
Robert had used the secret passage—the passage which comes out into
the park between the first and second lodges. Robert, then, had been in
the house; it was a put-up job between Robert and Cayley. But how could
Robert be there without Mark knowing? Obviously, Mark knew too. What did
it all mean?"</p>
<p>"When was this?" interrupted Bill. "Just after the inquest—after
you'd seen Amos and Parsons, of course?"</p>
<p>"Yes. I got up and left them, and came to look for you. I'd got back to
the clothes then. Why did Mark change his clothes so secretly? Disguise?
But then what about his face? That was much more important than clothes.
His face, his beard—he'd have to shave off his beard—and then—oh,
idiot! I saw you looking at that poster. Mark acting, Mark made-up, Mark
disguised. Oh, priceless idiot! Mark was Robert.... Matches, please."</p>
<p>Bill passed over the matches again, waited till Antony had relit his pipe,
and then held out his hand for them, just as they were going into the
other's pocket.</p>
<p>"Yes," said Bill thoughtfully. "Yes.... But wait a moment. What about the
'Plough and Horses'?" Antony looked comically at him.</p>
<p>"You'll never forgive me, Bill," he said. "You'll never come clue-hunting
with me again."</p>
<p>"What do you mean?"</p>
<p>Antony sighed.</p>
<p>"It was a fake, Watson. I wanted you out of the way. I wanted to be alone.
I'd guessed at my x, and I wanted to test it—to test it every way,
by everything we'd discovered. I simply had to be alone just then. So—"
he smiled and added, "Well, I knew you wanted a drink."</p>
<p>"You are a devil," said Bill, staring at him. "And your interest when I
told you that a woman had been staying there—"</p>
<p>"Well, it was only polite to be interested when you'd taken so much
trouble."</p>
<p>"You brute! You—you Sherlock! And then you keep trying to steal my
matches. Well, go on."</p>
<p>"That's all. My x fitted."</p>
<p>"Did you guess Miss Norris and all that?"</p>
<p>"Well, not quite. I didn't realize that Cayley had worked for it from the
beginning—had put Miss Norris up to frightening Mark. I thought he'd
just seized the opportunity."</p>
<p>Bill was silent for a long time. Then, puffing at his pipe, he said
slowly, "Has Cayley shot himself?"</p>
<p>Antony shrugged his shoulders.</p>
<p>"Poor devil," said Bill. "It was decent of you to give him a chance. I'm
glad you did."</p>
<p>"I couldn't help liking Cayley in a kind of way, you know."</p>
<p>"He's a clever devil. If you hadn't turned up just when you did, he would
never have been found out."</p>
<p>"I wonder. It was ingenious, but it's often the ingenious thing which gets
found out. The awkward thing from Cayley's point of view was that, though
Mark was missing, neither he nor his body could ever be found. Well, that
doesn't often happen with a missing man. He generally gets discovered in
the end; a professional criminal; perhaps not—but an amateur like
Mark! He might have kept the secret of how he killed Mark, but I think it
would have become obvious sooner or later that he had killed him."</p>
<p>"Yes, there's something in that.... Oh, just tell me one thing. Why did
Mark tell Miss Norbury about his imaginary brother?"</p>
<p>"That's puzzled me rather, too, Bill. It may be that he was just doing the
Othello business—painting himself black all over. I mean he may have
been so full of his appearance as Robert that he had almost got to believe
in Robert, and had to tell everybody. More likely, though, he felt that,
having told all of you at the house, he had better tell Miss Norbury, in
case she met one of you; in which case, if you mentioned the approaching
arrival of Robert, she might say, 'Oh, I'm certain he has no brother; he
would have told me if he had,' and so spoil his joke. Possibly, too,
Cayley put him on to it; Cayley obviously wanted as many people as
possible to know about Robert."</p>
<p>"Are you going to tell the police?"</p>
<p>"Yes, I suppose they'll have to know. Cayley may have left another
confession. I hope he won't give me away; you see, I've been a sort of
accessory since yesterday evening. And I must go and see Miss Norbury."</p>
<p>"I asked," explained Bill, "because I was wondering what I should say to—to
Betty. Miss Calladine. You see, she's bound to ask."</p>
<p>"Perhaps you won't see her again for a long, long time," said Antony
sadly.</p>
<p>"As a matter of fact, I happen to know that she will be at the
Barringtons. And I go up there to-morrow."</p>
<p>"Well, you had better tell her. You're obviously longing to. Only don't
let her say anything for a day or two. I'll write to you."</p>
<p>"Righto!"</p>
<p>Antony knocked the ashes out of his pipe and got up.</p>
<p>"The Barringtons," he said. "Large party?"</p>
<p>"Fairly, I think."</p>
<p>Antony smiled at his friend.</p>
<p>"Yes. Well, if any of 'em should happen to be murdered, you might send for
me. I'm just getting into the swing of it."</p>
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