Agatha Christie: The Mysterious Affair at Styles

CHAPTER 5. "IT ISN'T STRYCHNINE, IS IT?" (continued)

Poirot made me recapitulate the scene of the night before, listening very carefully, and verifying the position of the various cups.

"So Mrs. Cavendish stood by the tray--and poured out. Yes. Then she came across to the window where you sat with Mademoiselle Cynthia. Yes. Here are the three cups. And the cup on the mantel-piece, half drunk, that would be Mr. Lawrence Cavendish's. And the one on the tray?"

"John Cavendish's. I saw him put it down there."

"Good. One, two, three, four, five--but where, then, is the cup of Mr. Inglethorp?"

"He does not take coffee."

"Then all are accounted for. One moment, my friend."

With infinite care, he took a drop or two from the grounds in each cup, sealing them up in separate test tubes, tasting each in turn as he did so. His physiognomy underwent a curious change. An expression gathered there that I can only describe as half puzzled, and half relieved.

"Bien!" he said at last. "It is evident! I had an idea--but clearly I was mistaken. Yes, altogether I was mistaken. Yet it is strange. But no matter!"

And, with a characteristic shrug, he dismissed whatever it was that was worrying him from his mind. I could have told him from the beginning that this obsession of his over the coffee was bound to end in a blind alley, but I restrained my tongue. After all, though he was old, Poirot had been a great man in his day.

"Breakfast is ready," said John Cavendish, coming in from the hall. "You will breakfast with us, Monsieur Poirot?"

Poirot acquiesced. I observed John. Already he was almost restored to his normal self. The shock of the events of the last night had upset him temporarily, but his equable poise soon swung back to the normal. He was a man of very little imagination, in sharp contrast with his brother, who had, perhaps, too much.