"You told me if I ever got into a tight place, you'd see me through," he began.

Rock nodded and the corners of his thick lips turned downward.

"I sincerely trust you have met with no business reverses, my young friend," he purred. "However, if such is the case, feel perfectly free to make me your confidant."

Briefly Gregory stated his case, to which the old man listened attentively. When he had concluded, Rock's eyes were on the ceiling, and his soft white hands caressed the desk noiselessly.

"If you will accept a word of advice from a man old enough to be your father, and one who is entirely disinterested in you, save in a personal way as the son of my old friend, you will——"

"What?"

Gregory cut short his rambling.

"Stay away from Diablo Island."

Rock's advice carried a mandatory note which was not lost upon his auditor.