“Why seek you to know who I am,” replied the unknown, “at the very moment when I come at your call, and bring what you desire?” “All the same,” said Sainte-Croix, still attributing what he heard to a supernatural being, “when one makes a compact of this kind, one prefers to know with whom one is treating.” “Well, since you must know,” said the stranger, “I am the Italian Exili.” Sainte-Croix shuddered anew, passing from a supernatural vision to a horrible reality. The name he had just heard had a terrible notoriety at the time, not only in France but in Italy as well. Exili had been driven out of Rome, charged with many poisonings, which, however, could not be satisfactorily brought home to him. He had gone to Paris, and there, as in his native country, he had drawn the eyes of the authorities upon himself; but neither in Paris nor in Rome was he, the pupil of Rene and of Trophana, convicted of guilt. All the same, though proof was wanting, his enormities were so well accredited that there was no scruple as to having him arrested. A warrant was out against him: Exili was taken up, and was lodged in the Bastille. He had been there about six months when Sainte-Croix was brought to the same place. The prisoners were numerous just then, so the governor had his new guest put up in the same room as the old one, mating Exili and Sainte-Croix, not knowing that they were a pair of demons. Our readers now understand the rest. Sainte-Croix was put into an unlighted room by the gaoler, and in the dark had failed to see his companion: he had abandoned himself to his rage, his imprecations had revealed his state of mind to Exili, who at once seized the occasion for gaining a devoted and powerful disciple, who once out of prison might open the doors for him, perhaps, or at least avenge his fate should he be incarcerated for life. The repugnance felt by Sainte-Croix for his fellow-prisoner did not last long, and the clever master found his pupil apt. Sainte-Croix, a strange mixture of qualities good and evil, had reached the supreme crisis of his life, when the powers of darkness or of light were to prevail. Maybe, if he had met some angelic soul at this point, he would have been led to God; he encountered a demon, who conducted him to Satan. Exili was no vulgar poisoner: he was a great artist in poisons, comparable with the Medici or the Borgias. For him murder was a fine art, and he had reduced it to fixed and rigid rules: he had arrived at a point when he was guided not by his personal interest but by a taste for experiment. God has reserved the act of creation for Himself, but has suffered destruction to be within the scope of man: man therefore supposes that in destroying life he is God’s equal. Such was the nature of Exili’s pride: he was the dark, pale alchemist of death: others might seek the mighty secret of life, but he had found the secret of destruction.