Still he swore he would discover everything, either through the duchess or through the Widow Chupin; and he ordered Otto to procure him a costume such as was generally worn by the frequenters of the Poivriere. He did not know how soon he might have need of it. This happened early in February, and from that moment Blanche did not take a single step without being watched. Not a letter reached her that her husband had not previously read. And she had not the slightest suspicion of the constant supervision to which she was subjected. Martial did not leave his room; he pretended to be ill. He felt he could not meet his wife and remain silent. He remembered the oath of vengeance which he had sworn over Marie-Anne’s lifeless form only too well. However, the watch which Otto kept over the duchess, and the perusal of the letters addressed to her, did not yield any fresh information, and for this reason: Polyte Chupin had been arrested on a charge of theft, and this accident caused a delay in the execution of Lacheneur’s plans. But at last the latter prepared everything for Shrove Sunday, the 20th of February. On the previous day, in accordance with her instructions, the Widow Chupin wrote to the duchess that she must come to the Poivriere on Sunday night at eleven o’clock. On that same evening, Jean was to meet his accomplices at a ball at the Rainbow--a wine-shop bearing a very unenviable reputation--and give them their final instructions. These accomplices were to open the scene; he was only to appear at the _denouement_. “All is well arranged; the mechanism will work of its own accord,” he said to himself. But, as is already known, the “mechanism,” as he styled it, failed to act. On receiving the Widow Chupin’s summons, Blanche revolted for a moment. The lateness of the hour, the distance, the isolation of the appointed meeting place, frightened her. Still, she was obliged to submit, and on Sunday evening she furtively left the house, accompanied by Camille, the same maid who had been present when Aunt Medea died. The duchess and Camille were attired like women of the lowest order, and felt no fear of being recognized. And yet a man was watching who quickly followed them. This was Martial. He had perused the note appointing this rendezvous even before his wife, and had disguised himself in the costume Otto had procured for him--that of a labourer about the quays. Then, in hope of making himself absolutely unrecognizable, he had soiled and matted his hair and beard; his hands were grimed with dirt; and he really seemed to belong to the class of which he wore the attire. Otto had begged to be allowed to accompany his master; but the duke refused, remarking that his revolver would prove quite sufficient protection. He knew Otto well enough, however, to feel certain he would disobey him.