"I did not say so. And you, Mademoiselle, what do you think?"
Katherine shook her head.
"How should I know? I don't know anything about those things, but I should say that—"
"Yes," said Poirot encouragingly.
"Well—from what you say the Count does not sound the kind of man who would actually kill anybody."
"Ah! Very good," cried Poirot, "you agree with me; that is just what I have said." He looked at her sharply. "But tell me, you have met Mr. Derek Kettering?"
"I met him at Lady Tamplin's, and I lunched with him yesterday."
"A mauvais sujet," said Poirot, shaking his head; "but les femmes—they like that, eh?"
He twinkled at Katherine and she laughed.
"He is the kind of man one would notice anywhere," continued Poirot. "Doubtless you observed him on the Blue Train?"