Elliot gave a short laugh.

“The war is as good as won!”

Mark said,

“When I’d got that squared I came back and saw Albert. I told him he’d better come clean, and.he did. I don’t know how much he was lying. Not much, I think, but of course he was doing the best for himself. It makes quite a story, but I dare say it’s true, or as near as makes no difference. His mother was ill, and they were awfully poor. He was working for a firm with a good solid connection. They got a lot of valuable stuff in for alterations and repairs. He began by picking out a stone here and a stone there and substituting something not quite so good-not paste but the real thing-lighter stones-inferior quality. He’d sell the stone he’d picked out and pocket the difference between that and the replacement. He says there’s quite a lot of that sort of thing done. That’s how he got to know the ropes. Then his mother died, and he came here. He says nothing was farther from his thoughts than to try any monkey business. He was going to be industrious and respectable, because he hoped it was going to pay a lot better than balancing on the edge of crime. Unfortunately the past bobbed up-his friend Izzy in fact. Albert says that Izzy blackmailed him. I don’t think I believe that part. I think Izzy suggested a deal over Aunt Clara’s diamonds and Albert fell for it. There was quite a brisk market for stones just about then. Our leading moneygrubbers were feeling nervous about the prospects of a capital levy after the war, and were putting the stuff into diamonds. Aunt Clara’s had just been valued, so the chances of a revaluation, even for probate, were remote. He fixed it all up with Izzy, and waited for an opportunity. Well, he got it when Uncle James was laid up last year. He was actually sent to get the cases out of the safe. It was as easy as falling off a log. He photographed everything, took careful measurements, Izzy supplied the imitations, and Albert substituted them for the real stones. He dwelt with pride on the fact that he is a very skilled workman-I had to head him off giving me a lecture on the subject.” Miss Silver coughed.

“It was the fact that, whilst full of information upon every other subject and unusually eager to impart what he knew, Mr. Pearson appeared unable or unwilling to converse upon anything connected with his former profession that first turned my attention in the direction of the diamonds.”

“It was frightfully clever of you,” said Lydia.

Miss Silver shook her head in a modest and deprecatory manner.

“Oh, no,” she said. “You see, Mr. Pearson’s alibi was naturally a very suspicious circumstance, and yet in a young man so obviously determined to advance himself it really was capable of an innocent interpretation. What he said to Mr. Wray is quite true. He is not an attractive person. He is not liked, and nobody would have been sorry to assume that it was he who had incurred Mr. Paradine’s displeasure. So then, it all came down to this-if he had a motive for murdering Mr. Paradine, the alibi was compromising, and if it could be proved to be false, quite conclusive. Looking about for a possible motive, I naturally thought about the diamonds, and suggested that a valuer should be present when the safe was opened.”

“It was very, very clever of you,” said Lydia. “We thought Mark was going to be arrested every minute. It was like standing on the edge of a most dreadful precipice and waiting for the fall to begin. I didn’t think anything could be so frightful. And you saved us.”

Mark put his hand on her shoulder again.

Miss Silver beamed upon them.

“Praise is gratifying even when exaggerated. I do not think that Mr. Mark was really in much danger. You see, he was innocent-that was quite plain to me from the beginning. He was shocked, and he was in grief. There was no trace of guilt or remorse. But my first evening in this house showed me two things very plainly. Mr. Pearson was in a nervous state, and declined any approach to the subject of jewelry. Miss Paradine was in a highly charged condition of antagonism towards Mr. Wray and possessive feeling for Mrs. Wray. I am sensitive to such currents of feeling, and have found this very useful in my work. Strong emotions of this nature point towards a motive for murder even more conclusively than concrete evidence. I considered Miss Paradine, but I also considered Mr. Pearson. Mr. Paradine, having omitted to name the person he accused, left the way open for anyone who had been at fault in some other direction to accuse himself. I soon discovered that it was Miss Paradine who had taken the blue-prints, but I still thought it possible that not she but Mr. Pearson had committed the murder. The more I thought about his alibi, the more incriminating it appeared. After Polly’s evidence it seemed very difficult to believe that he was innocent, and when Mr. Jones declared that the diamonds had been tampered with it became impossible.”

All this time Elliot Wray had been silent. He said now,

“And yet he didn’t do it. Or did he?”

Mark started. Lydia said, “Oh!”

Miss Silver gave him a bright attention.

“That is a very interesting remark, Mr. Wray. May I ask what prompted it?”

Elliot leaned forward.

“What was Albert doing in the bathroom?” he said.

Miss Silver coughed.

“I have asked myself that question.”

“He’d got no conceivable reason for being there, you know-unless he was waiting for Mr. Paradine to go out on the terrace. He must have been there for at least five minutes. If he wasn’t waiting for that, what was he waiting for? If he wanted to see Mr. Paradine he had only to open the study door and go in. But he didn’t do that-he hung out of the bathroom window and waited. I say there was only one thing that he could have been waiting for.”

Miss Silver inclined her head.

“That is so. But you are forgetting the direct evidence of Mr. Frank Ambrose. He saw Miss Paradine come out of her sister-in-law’s room, and he saw her push her brother over the parapet. That he did so is an extremely fortunate circumstance for Mr. Pearson, whose presence in the bathroom had already been established by the discovery of one of his prints upon the window frame.”

“What was he doing there?” said Elliot obstinately.

Miss Silver resumed her knitting. The stitches were diminishing to the point of the dark grey toe.

“I can tell you what I think,” she said. “I cannot tell you whether it is the truth or not. That will never be known to anyone except Mr. Pearson. But I have read his character, and I have tried to put myself in his place. I can tell you what I think. Consider for a moment what his feelings must have been when Mr. Paradine launched his accusation at dinner. He could not have doubted for a moment that it was aimed at him. His sin had found him out. Think what that meant to him. He had been an industrious boy and an industrious young man, he had attained a confidential position, he had good prospects, and in one moment he saw all these things about to dissolve and leave him ruined. I believe he went to the study in a desperate state of mind, resolved to know the worst. Mr. Paradine’s ‘Hullo, Albert-have you come to confess?’ must have removed his last lingering hope. But the immediate entrance of Lane put it out of his power to reply, and in the next few moments, whilst they were together in the room, I believe that a plan formed itself in his mind. Mr. Paradine called him back to suggest an alteration to some letter dictated earlier in the day. This took only a moment. Before Lane was out of earshot Mr. Pearson left the study and ran up the back stairs to alter the clock. The alibi was already planned. I do not know whether Mr. Paradine’s death was planned also, or whether that came later during the hours when he sat in your room, Mr. Wray, and waited for midnight. I think he did plan Mr. Paradine’s death-like you I can see no other reason for his waiting at the bathroom window. But I do not think he would have carried out his plan. At any rate he made no move to do so. He remained at the window and watched while Mr. Paradine stood by the parapet. He could not have expected him to stay there indefinitely, yet he made no move. He has, I think, no imagination. He made a plan, but he had no idea of what his feelings would be when it came to carrying it out. He has not the temperament of a murderer. His mental processes are orderly and balanced. I can only repeat that I do not believe he would have killed Mr. Paradine.” The last stitch left the last needle. Little Roger’s leggings dropped completed upon Miss Silver’s lap. “Let us think of pleasanter things,” she said. “You will be taking your wife away, Mr. Wray?”