Devanne and Holmes exchanged looks, and Mon. Devanne said:

“He knew the mystery would be a simple one for you. It is a delicate compliment.”

A smile of satisfaction lighted up the detective’s serious features for a moment. The compliment pleased him. He shook his head, as he said:

“A clever man! I knew that when I saw him.”

“Have you seen him?”

“I met him a short time ago—on my way from the station.”

“And you knew it was Horace Velmont—I mean, Arsène Lupin?”

“That is right. I wonder how it came—”

“No, but I supposed it was—from a certain ironical speech he made.”

“And you allowed him to escape?”