“I let myself in with my own latchkey.”

“Ah!” murmured the Magistrate.

Again he struck the bell on the table with his hand. The door opened, and a messenger appeared.

“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.