four o'clock
In the study and in the house , the inquiry , which had been adjourned for lunch , was resumed . Perenna heard footsteps and the sound of voices on every side . At last , feeling tired and bored , he leaned back in his chair and fell asleep . * * * * * It was four o'clock when Sergeant Mazeroux came and woke him . As he led him to the study , Mazeroux whispered : `` Well , have you discovered him ? '' `` Whom ? '' `` The murderer . ''