"Bring in the maid, Mason," said M. Carrège.
"Very good, Monsieur le Juge."
Ada Mason was brought in.
"Will you be so good, Mademoiselle, as to look at this gentleman. To the best of your ability was it he who entered your mistress's compartment in Paris?"
The woman looked long and searchingly at the Count, who was, Poirot fancied, rather uneasy under this scrutiny.
"I could not say, sir, I am sure," said Mason at last. "It might be and again it might not. Seeing as how I only saw his back, it's hard to say. I rather think it was the gentleman."
"But you are not sure?"
"No—o," said Mason unwillingly; "n—no, I am not sure."
"You have seen this gentleman before in Curzon Street?"
Mason shook her head.