"Rot!" Anthony said thinly.

Johnson Boller's face grew grave and more grave. He sighed and looked over Anthony's head for a little and then, reaching a decision, he looked at him suddenly.

"Old chap," he said kindly.

"Well?"

"I don't want to worry you, but perhaps it is better for you to know—now. And I wish you wouldn't mention it, because Bob told me once, two years ago, and showed it to me in a sort of burst of confidence."

"Showed you what?"

"Down at the base of his thumb, Bob Vining's got the murderer's cross!" Johnson Boller said huskily.

"Nonsense!" Anthony said sharply.

"It's a fact! The little mark is there, clear as if it had been drawn in with a knife!" said Mr. Boller. "And for another fact—I don't know whether you know this or not, but virtually every murderer who has been executed in the last twenty years in this State, has shown that cross in some form and——"

He stayed the pleasant flow abruptly. From the direction of David's doorway a rustle was coming, very softly and cautiously, yet quite distinctly. It paused in the corridor while Mary drew aside a corner of the curtain and looked in—and then Mary was with them and asking: