"I saw the formula and the sacks put in the safe to-night," she answered.

George shook his head.

"Nora, you're a wonder."

"No wonder," she said contemptuously. "Nothing but hard work. An imbecile could have made friends with the housekeeper, but it took drudgery to get at the old man. I won't waste that. If there's any slip—"

The leader glanced at the gray mask.

"That's up to Simmons now," he said.