“Of course—” he heard himself say. Handesley interrupted him.

“You think it very strange that I should want to possess this weapon,” he said. “To you, perhaps, it is strange, but you are not a passionately enthusiastic collector, nor have you the detached point of view of the student. This knife cannot remind me more forcibly of that which, in any case, I can never forget, but it seems to me that it is due to Charles’ memory that I should have it when once the police have finished with it. You do not understand this, but Charles himself, who knew my character, would have understood. I think anyone interested in such things as I am interested would also understand. It is the scientific point of view.”

“What’s this about the scientific point of view?” asked Wilde, poking his head round the bathroom door. “Sorry if I’m interrupting, but I heard the phrase.”

“You should be able to interpret it, Arthur,” rejoined Sir Hubert. “I must go down and relieve Rosamund. She is terribly upset still and Alleyn insisted on interviewing her again to-day. Arthur, tell me, do you think—?”

‘I’ve given up thinking,“ said Arthur Wilde bitterly.

Nigel saw Handesley as he went out steal a glance at his old friend.

“What’s the matter with Hubert?” asked Wilde when they were alone.

“Don’t ask me,” said Nigel wearily. “This crime seem to have acted like a corrosive acid in all our hearts. Do you know, he wants to have the dagger?”

“What!”

“Yes. He reminded me of that will you witnessed— you remember, the joke will.”

“I remember,” said Wilde, sitting on the bed and staring blankly at Nigel through his glasses.

“He said you would understand.”

“The scientific point of view. I see. How terribly consistent! Yes, I suppose in a way I do understand, but— good Lord!”

“I know. Have a cigarette.”

“Arthur!” called Mrs. Wilde from beyond the bathroom. “Have you rung up and told them what time we are arriving to-night? I do wish you wouldn’t wander off like that.”

“Coming, darling,” said Wilde. He hurried back to his wife and Nigel, wondering if Angela had returned, went out on to the landing. He met Alleyn at the head of the stairs.

“I was looking for you,” said the Chief Inspector. “Can you come down to the study for a moment?”

“With pleasure,” answered Nigel drearily. “What’s up now? Are you going to tell me you’ve discovered the murderer?”

“Well, as a matter of fact, I am,” said Alleyn.

Chapter XV

Alleyn Comes Cleanish

Did you mean that?” asked Nigel as the detective closed the door behind them.

“Yes, it’s true. I know now. I have known for some time, I think, but even though a Yard official is supposed to have no psyche, I find there is often a moment in a case when a piece of one’s mind, one’s feeling, one’s sense, knows the end while all the rest of the trained brain cuts this intuitive bit dead. Yes, it’s like that sometimes.”

“Who is it?”

“It is not for the sake of keeping you on tenterhooks that I don’t answer that at once. I want someone to listen to the evidence. Oh, we’ve gone over it at the Yard ad infinitum, of course. There are one or two of us who know the case-book off by heart. But I want to hear myself repeating it to someone fresh. Will you be patient, Bathgate?”

“Very well, only, God knows, it’s not easy.”

“I’ll be as brief, and as impersonal, as possible. The policeman speaking. On Monday morning when I began work on this case I interviewed the members of this house-party individually and afterwards, as you remember, together. At the conclusion of our ‘trial’ I made an exhaustive examination of the house. With the assistance of Bunce I reconstructed the murder. The position of the body (which had been so infuriatingly interfered with), of the knife, of the cocktail shaker and of the gong, led me to assume that Rankin had been stabbed from behind and from above. It is no easy matter to drive a knife into a body from the back so as to penetrate the heart. This had been accomplished and I, with Doctor Young, suspected a certain anatomical knowledge. Who of the party possessed such knowledge? Doctor Tokareff. For some time the evidence pointed strongly towards Doctor Tokareff, and the fantastic aspect of the motive was considerably upheld by the murder of Krasinski for the same reason — the violation of the sacred dagger. Two objections withheld me from going definitely for the Russian — one, the fact that he is left-handed, the other the distance from his room to the scene of the murder. Also I gathered that he strongly urged the inadvisability of moving the body.

“His attitude, too, was hard to explain. He made no attempt to disguise his indifference to Rankin’s death and his feeling that it was an act of poetic justice. Next I turned my attention to Rosamund Grant. Here we had the age-old motive of the woman, not exactly scorned, but faced with complete disillusion as regards the man she passionately loved. She was aware of Rankin’s intrigue with Mrs. Wilde. She had tried to see him, had lied about her movements immediately prior to the murder, and in my interview with her was an extremely unsatisfactory subject. She had studied anatomy and had in the past given exhibitions of an ungovernable and violent temper. Miss Angela’s discovery of the wisp of green fluff from her shoe in Rankin’s room was a fortunate event for Miss Grant. It cut down the time factor in her case to an almost impossible ration. Then Sir Hubert. Here the only motive I could discover was the passion of the collector. This passion can become a disease and I am not sure that Sir Hubert is not tainted with it. He has gone to extraordinary lengths to add to his collection. But murder? And again, the time factor. In your case I was extremely thorough, but the housemaid’s evidence was unanswerable; you had smoked two cigarettes while you were in your room, too. You were not in debt. Money is the motive behind most crimes and in your case it was there — nice and healthy. I gave you up with reluctance.

“Well, so it went on. Mrs. Wilde, who, from the scene you and Miss Grant overheard, revealed herself to be in a state of hysterical and reluctant subjection to Rankin, was too short to have accomplished the murder. Her husband had revealed an interesting phobia of hers as regards knives and blades of all sorts. She was in debt. Rankin left her husband three thousand. Also she had lugged the body some way out of position — a noteworthy point. But she was too short. This led me back to the position of the assailant and I put Bunce in Rankin’s place and myself stood behind him at the foot of the stairs. If I stood on the bottom step I could not reach him, and I was persuaded the victim had been standing by the cocktail tray. From the floor, even, I could scarcely get the correct down-drive indicated by the position of the dagger. Where, then, had the assailant stood? How had he drawn so close without being observed and yet—! Every time I seemed to end up in a cul-de-sac. I had, of course, got all your finger-prints. We went over every inch of the walls and the bannisters. The knife handle gave no prints. Then at last we made another discovery. Amongst the confused blur of prints on the knob at the bottom of the bannister were the faint but unmistakable impressions left by two hands that had gripped it from above. The left hand was moderately clear, but the right hand was quite a different proposition. It was the curious impression left by a gloved hand and the pressure had been great enough to show the actual seams of the glove and in places an indication of the coarse-grained leather. They were bad prints, but we got a good enough impression from them to suggest they had been made by the right and left hands of the same individual. Their angle was curious. It called up the picture of someone standing with their back to the stairs, leaning across the curved end of the bannister at a very awkward angle. A most unlikely attitude, unless—” Alleyn paused.