“You have the fact that one man died while the other escaped. He had to battle the police to flee to safety. He simply abandoned the window as a method of escape.”

“Then you think that this is a separate affair?” Cardona queried.

“Absolutely! It doesn’t fit in with the other progression, at all. Harshaw and Glenn were eliminated by cunningness. The murderer has remained completely hidden.

“Why should he have suddenly changed his method and performed a bold, reckless slaying?”

“You’ve got a clear idea of it, professor,” said Cardona. “It’s all right, from your standpoint, because you’re working on these crimes like an observer. But I’m running up against the hard facts that we meet in all police work.

“I can’t go ahead and forget this last shooting up at Harshaw’s. It’s a crime, just like the killing of the old man.

“It may be doubling my work, and making me go two ways at once, but — I’ve got to solve it!”

“Certainly, Cardona,” interposed the commissioner. “We appreciate your position, and you may rest assured that I have already gained a first-hand impression of your efficiency.

“I have the utmost confidence in you, Cardona. While you are handicapped with these necessary details, Biscayne is able to study these problems from an advantageous position. I trust that he will be able to offer you valuable assistance.”

“Thanks, commissioner,” said Cardona warmly. “I’ve got flyers out, trying to get some dope on this fellow who was killed at Harshaw’s.