"No. I didn't notice him at meals at all. I only saw him once—going into his wife's compartment."
Poirot nodded. "A strange business," he murmured. "I believe you said you were awake, Mademoiselle, and looked out of your window at Lyons? You saw no tall dark man such as the Comte de la Roche leave the train?"
Katherine shook her head. "I don't think I saw any one at all," she said. "There was a youngish lad in a cap and overcoat who got out, but I don't think he was leaving the train, only walking up and down the platform. There was a fat Frenchman with a beard, in pyjamas and an overcoat, who wanted a cup of coffee. Otherwise, I think there were only the train attendants."
Poirot nodded his head several times. "It is like this, you see," he confided, "the Comte de la Roche has an alibi. An alibi, it is a very pestilential thing, and always open to the gravest suspicion. But here we are!"
They went straight up to Van Aidin's suite, where they found Knighton. Poirot introduced him to Katherine. After a few commonplaces had been exchanged, Knighton said, "I will tell Mr. Van Aldin that Miss Grey is here."
He went through a second door into an adjoining room. There was a low murmur of voices, and then Van Aldin came into the room and advanced towards Katherine with outstretched hand, giving her at the same time a shrewd and penetrating glance.
"I am pleased to meet you, Miss Grey," he said simply. "I have been wanting very badly to hear what you can tell me about Ruth."
