"Are you satisfied, Detective Sergeant?"
"I am!" Stokes spoke angrily. "While you kept me talking, she slipped out through that study, and down into the street."
"Ah," murmured Nicol Brinn.
"In fact, the whole business looks very suspicious to me," continued the detective.
"Sorry," drawled Brinn, again consulting his watch. "The five minutes are up. I must be off."
"Not until I have spoken to Scotland Yard, sir."
"You wish to speak to Scotland Yard?"
"I do," said Stokes, grimly.
Nicol Brinn strode to the telephone, which stood upon a small table almost immediately in front of the bookcase. The masked door remained ajar.
"You are quite fixed upon detaining me?"
"Quite," said Stokes, watching him closely.
In one long stride Brinn was through the doorway, telephone in hand! Before Stokes had time to move, the door closed violently, in order, no doubt, to make it shut over the telephone cable which lay under it!
Detective Sergeant Stokes fell back, gazed wildly at the false books for a moment, and then, turning, leaped to the outer door. It was locked!
In the meanwhile, Nicol Brinn, having secured the door which communicated with the study, walked out into the lobby where Hoskins was seated. Hoskins stood up.
