In order to grasp this new phase of the tragedy in its proper bearings he stood stock still, and gazed blankly into the serious face of the detective. Furneaux knew he would do that. It was a mannerism. Some men can not think and move at the same moment, and Robert Fenley was one.

Naturally, young Fenley did not know that he was leaving a new set of footprints by the side of the others already attributed to him. Having done that, he was no longer wanted.

"We'll solve every part of the puzzle in time," said Furneaux slowly, moistening his thin lips with his tongue as if he were about to taste another glass of rare old-vintage wine.

"I mentioned the fact of the gun being missing to show you how unwise you were this morning. You shouldn't have bolted off as you did when Mr. Winter requested you to remain. I haven't the least doubt, Mr. Fenley, that you can prove you were in London at the time the murder was committed, and during some days prior to it, but the police like these matters to be cleared up; if I may give you a hint, you'll tell the Superintendent that you regret your behavior, and show you mean what you say by giving him all the information he asks for. Here he is now. I hear Mr. Hilton's car, and Mr. Winter is coming with him from town."

"Mr. Hilton's car? It's no more his car than mine. You mark my words, there will be trouble in the family if my brother starts bossing things. He hates me, and would do me an ill turn if he could. Was it Hilton who spread this story about my gun?"

"No. Rather the reverse. He kept your name studiously out of it."

"Who was it, then? I have a right to know."

"I fail to recollect just how the matter cropped up. It was the direct outcome of the common observation of several persons who heard the report, and who were able to discriminate between one class of gun and another. Anyhow, there is no occasion for you to squeal before you are hurt. You acted like a fool this morning. Try and behave yourself more reputably now."

The prophet Balaam was not more taken aback when rebuked by his ass than Robert Fenley when Furneaux turned and rent him in this fashion. Hitherto the detective's manner had been mildness itself, so this change of front was all the more staggering.

"Oh, I say!" came the blustering protest. "I don't allow any of you fellows to talk to me like that. I——"