"You might have saved yourself the trouble of coming here. I have nothing whatever to say."
"That means that you continue in your refusal to speak. Will you answer one or two questions?"
"No."
"Will you not tell me why you kept silence about what you saw in Mr. Glenthorpe's room that night of the murder?"
"Man, how did you find that out?" Penreath's calm disappeared in a sudden fury of voice and look. "What do you know?"
"I know whom you are trying to shield," replied the detective, with his eyes fixed on Penreath's face. "You are wrong. She——"
"I beg of you to be silent! Do not mention names, for God's sake." Penreath's face had grown suddenly white.
"It is in your power to ensure my silence."
"How?"
"By speaking yourself."