And he had heard our discussion of the radium. He had even heard—yes, I remembered distinctly—he had even heard in what room the radium was in use and that the south door was to be left unlocked. To be sure, I might have been expected to lock the door following Dr. Letheny’s visit, but there were windows and——

Someone was knocking at the door and I had barely time to slip the cigarette case under the pillow. It was Miss Dotty, her eyes fairly popping with excitement.

“Where is the key to the closet in the south wing?”

“What closet? There are several——”

“I mean the closet in Room 18, of course. Do you have the key?”

“No. And I don’t know where it is. Who wants it?”

“They want it downstairs.”

“They?”

“That little, slim detective. He has just come. And oh, Miss Keate, he is so handsome,” she rolled her rather vacant eyes upward.

“Who is handsome?” I spoke somewhat snappishly. Miss Dotty’s rhapsodies aggravate me.