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 "What are you getting at? Do youdo you mean to insinuate that II killed her?"

He laughed suddenly.

"I mustn't lose my temper; i'’s too palpably absurd. Why, if I killed her I should have had no need to steal her jewels, would I?"

"That is true," murmured Poirot, with a rather crestfallen air. "I did not think of that."

"If ever there were a clear case of murder and robbery, this is it," said Derek Kettering. "Poor Ruth, it was those damned rubies did for her. It must have got about she had them with her. There has been murder done for those same stones before now, I believe."

Poirot sat up suddenly in his chair. A very faint green light glowed in his eyes. He looked extraordinarily like a sleek, well-fed cat.

"One more question, M. Kettering," he said. "Will you give me the date when you last saw your wife?"

"Let me see," Kettering reflected. "It must have beenyes over three weeks ago. I am afraid I can't give you the date exactly."

"No matter," said Poirot drily; "that is all I wanted to know."

"Well," said Derek Kettering impatiently, "anything further?"

He looked towards M. Carrège. The latter sought inspiration from Poirot, and received it in a very faint shake of the head.

"No, M. Kettering," he said politely; "no, I do not think we need trouble you any further. I wish you good morning."