“It is,” French answered, “but I’ll tell you because I really want my information. It may be a very serious matter, Dr. Philpot, and I am mentioning it in strict confidence only. I have certain reasons to suppose that Mr. Giles may have been murdered and I want to get your views on the possibility.”

Dr. Philpot’s astonishment at the announcement was quite as marked as that of his confrère, but he made less effort to conceal his scepticism.

“My dear Inspector! You’re surely not serious? Giles? Oh come now, you don’t expect me to believe that? What possible motive could any one have for doing such a thing?”

French did not explain the motive. He said he didn’t claim infallibility and admitted he might be wrong in his theory. He was simply collecting facts and he wanted any the other could supply.

“Well,” Philpot declared, “these are the facts so far as I know them.” He crossed over to an index, and rapidly looking through it, withdrew a card. “This is the man’s record. He was seriously ill to begin with: he had a heart affection which might have killed him at any moment. I have attended him for years and his disease was growing worse. His life in fact was precarious. That is your first fact.

“The second is that during the week before his death he developed influenza. I went out and saw him on the Thursday. I believed that his days were numbered and I expected to hear of his death at any time. He did die, if I remember correctly, on the following Tuesday. I did not see him then, as I was myself down with ’flu, but Dr. Emerson saw him and he can tell you if his death was natural. I don’t know, Inspector, what you are basing your opinion on, but I can say with certainty that I shall be surprised if you are right.”

“It is your outlook on the matter which most strongly supports my suspicion,” French rejoined: “yours and Dr. Emerson’s, for I have seen him and his is the same. He was expecting that Mr. Giles would die from his disease, consequently when he did die he assumed that the disease was the cause. Perfectly naturally, mind you: I’m not criticising him. But my point is that his preconceived idea made him less critical than he might otherwise have been.”

“Ingenious no doubt, but to me unconvincing. However, it is not my affair, but yours. Is there any other question that you wish me to answer?”

French rapidly reflected. He thought that there was nothing more. Between these two men he had got what he wanted.

“I don’t think there is, doctor,” he returned. “I’m afraid your information hasn’t helped me on much, but after all it was facts that I wanted. I’ll not detain you any longer. Allow me just to say that I hope your present difficulties will be short-lived and that you may soon settle down satisfactorily again.”