"What do you mean?"
"As I say, you thought no one saw you--but _I_ saw you, Dereek, _mon
ami_; _I saw you coming out of the compartment of Madame your wife just
before the train got into Lyons that night._ _And_ I know more than
that. I know that when you came out of her compartment she was dead."
He stared at her. Then, like a man in a dream he turned very slowly and
went out of the room, swaying slightly as he walked.