Denby, scribbling on, did not immediately answer him. Presently he handed the written page to Monty. “Here’s my plan,” he said, “read it.”

While Monty was studying the paper Denby moved over to the light switch, and the room, except for the rose-shaded electric lamp, was in darkness.

“Jumping Jupiter!” Monty exclaimed, looking up from the paper with knit brows.

“Do you understand?” Denby asked.

“Yes,” Monty answered agitatedly; “I understand, but suppose I get rattled and make a mistake when the time comes?”

“You won’t,” Denby replied, still in low tone. “I’m depending on you, Monty, and I know you won’t disappoint me.” When he next spoke it was in a louder voice, louder in fact than he needed for conversational use.

“It’s a pity Miss Cartwright has gone to bed,” he exclaimed. “I might have risked trying to learn bridge, if she’d been willing to teach me. She’s a bully girl.”

“Don’t talk so loud,” Monty advised him, grinning.

“In these dictagraph days the walls have ears. Let’s go outside. We can’t tell who might hear us in this room. We’ll be safe enough on the lawn.”

“A good idea,” Denby agreed, moving away from the connecting door which they guessed had a listener concealed behind it, and turning out the lights. And Ethel Cartwright, straining her ears, heard the door opened and banged noisily, and footsteps hurrying past toward the stairway. It was at last the opportunity.