With a sigh of relief we went up to the rooms. Poirot crossed the outer one and went through to the inner one. Then he called me, his voice strangely agitated.

"Hastings, he's dead."

I came running to join him. The man was lying as we had left him, but he was dead, and had been dead some time. I rushed out for a doctor. Ridgeway, I knew, would not have returned yet. I found one almost immediately, and brought him back with me.

"He's dead right enough, poor chap. Tramp you've been befriending, eh?"

"Something of the kind," said Poirot evasively. "What was the cause of death, doctor?"

"Hard to say. Might have been some kind of fit. There are signs of asphyxiation. No gas laid on, is there?"

"No, electric light—nothing else."

"And both windows wide open, too. Been dead about two hours, I should say. You'll notify the proper people, won't you?"

He took his departure. Poirot did some necessary telephoning. Finally, somewhat to my surprise, he rang up our old friend Inspector Japp, and asked him if he could possibly come round.

No sooner were these proceedings completed than Mrs. Pearson appeared, her eyes as round as saucers.