take his word for it—touring the countryside in Jersey's lake district. Lindquist wants us to picture him as comforting the afflicted. And Mannix, I happen to know, has gone to some trouble to build up an alibi in case we get nosey. All of 'em, in fact, were doing something they don't want us to know about. Now, what was it? And why did they, of one accord, select the night of the murder for mysterious affairs which they don't dare mention, even to clear themselves of suspicion? Was there an invasion of efreets in the city that night? Was there a curse on the world, driving men to dark bawdy deeds? Was there Black Magic abroad? I think not."
"I'm laying my money on Skeel," declared Heath stubbornly. "I know a professional job when I see it. And you can't get away from those finger-prints and the Professor's report on the chisel."
Markham was sorely perplexed. His belief in Skeel's guilt had, I knew, been undermined in some measure by Vance's theory that the crime was the carefully premeditated act of a shrewd and educated man. But now he seemed to swing irresolutely back to Heath's point of view.
"I'll admit," he said, "that Lindquist and Cleaver and Mannix don't inspire one with a belief in their innocence. But since they're all tarred with the same stick, the force of suspicion against them is somewhat dispersed. After all, Skeel is the only logical aspirant for the rôle of strangler. He's the only one with a visible motive; and he's the only one against whom there's any evidence."
Vance sighed wearily.
"Yes, yes. Finger-prints—chisel marks. You're
