Only his eyes moved, shifting cautiously from the gun to my face. "What is the meaning of this?"

"You don't seem surprised to see me."

"I am too old for surprises."

"How old are you, Doctor—in human years, that is?"

He frowned, eyeing me speculatively. His gaze swiveled around the room.

"She's not here," I said.

"I don't know what you mean."

"I mean she's dead. I killed her."

He looked at me sharply. "You killed someone?"

"Not a person—but I killed the thing you see on your desk."