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." "Of course!" said Perenna. "It's as easy as shelling peas!" "That's a good thing!" said Mazeroux, greatly relieved and failing to see the joke. "But for that, as you saw for yourself, you would have been done for." Don Luis entered. In the room were the public prosecutor, the examining magistrate, the chief detective, the local commissary of police, two inspectors, and three constables in uniform. Outside, on the Boulevard Suchet, shouts were raised; and, when the commissary and his three policemen went out, by the Prefect's orders, to listen to the crowd, the hoarse voice of a newsboy was heard shouting: "The double