coffee, brought in seven cups, not knowing that Mr. Inglethorp never drank it, whereas Dorcas, who cleared them away the following morning, found six as usual—or strictly speaking she found five, the sixth being the one found broken in Mrs. Inglethorp’s room.
“I was confident that the missing cup was that of Mademoiselle Cynthia. I had an additional reason for that belief in the fact that all the cups found contained sugar, which Mademoiselle Cynthia never took in her coffee. My attention was attracted
continued Poirot, “I have been obliged to show my hand sooner than I intended. As long as I might be thought to be pursuing him, the criminal would be off his guard. Now, he will be doubly careful. Yes—doubly careful.” He turned to me abruptly. “Tell me, Hastings, you yourself—have you no suspicions of anybody?”