“All very fine, Mr. Holmes,” said he. “But there is one little flaw in your splendid theory. I was myself in my room, and I never left it during the day.”

“I am aware of that, Professor Coram.”

“And you mean to say that I could lie upon that bed and not be aware that a woman had entered my room?”

“I never said so. You were aware of it. You spoke with her. You recognized her. You aided her to escape.”

Again the professor burst into high-keyed laughter. He had risen to his feet, and his eyes glowed like embers.

“You are mad!” he cried. “You are talking insanely. I helped her to escape? Where is she now?”

“She is there,” said Holmes, and he pointed to a high bookcase in the corner of the room.