"Exactly," said Smith, looking at him keenly; "someone who was here yesterday. Have you any idea whom it could have been?"

West hesitated. "I had a visitor in the afternoon," he said, seemingly speaking the words unwillingly, "but—"

"A lady?" jerked Smith. "I suggest that it was a lady."

West nodded.

"You're quite right," he admitted. "I don't know how you arrived at the conclusion, but a lady whose acquaintance I made recently—a foreign lady."

"Karamaneh!" snapped Smith.

"I don't know what you mean in the least, but she came here—knowing this to be my present address—to ask me to protect her from a mysterious man who had followed her right from Charing Cross. She said he was down in the lobby, and naturally, I asked her to wait here whilst I went and sent him about his business."

He laughed shortly.

"I am over-old," he said, "to be guyed by a woman. You spoke just now of someone called Fu-Manchu. Is that the crook I'm indebted to for the loss of my plans? I've had attempts made by agents of two European governments, but a Chinaman is a novelty."

"This Chinaman," Smith assured him, "is the greatest novelty of his age. You recognize your symptoms now from Bayard Taylor's account?"