"This is Mrs. Inglethorpe's writing," I said. "But what does it mean?" "I don't know," said Poiro, "though I have an idea. But let us now examine检查 the coffee cups." "But why? Now we know about the cocoa可可粉." "Let me look at the coffee cups while you think about the cocoa可可粉," Poiro replied. The coffee cups and the tray were still in the drawing-room. I told Poiro exactly what had happened the night before. So, he said, Mary Cavendish stood by the tray, poured the coffee, and sat down with you and Mademoiselle Cynthia.
Yes, here are the three cups. And the cup of Lawrence Cavendish is on the mantelpiece.
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