 Okay, go ahead then. Open the door. Yes? What is it? There's been an attempted theft of the Horton Diamond, sir. We chased the crook this way. Have you seen anything of him? Why, no. There hasn't been anyone here tonight. Well, we'll keep on going. Good night. They're gone now. You did all right. I'm glad you're satisfied. Hey, what kind of a place is this? All those machines, bottles and things. This is my laboratory. What are you, a professor?