When Rodin had exclaimed, in his admiration of the generative power of thought, that the word necklace had been the germ of the infernal project he then contemplated, it was, that chance had brought to his mind the remembrance of the too famous affair of the diamond necklace, in which a woman, thanks to her vague resemblance to Queen Marie Antoinette, being dressed like that princess, and favored by the uncertainty of a twilight, had played so skillfully the part of her unfortunate sovereign, as to make the Cardinal Prince de Rohan, though familiar with the court, the complete dupe of the illusion. Having once determined on his execrable design, Rodin had sent Jacques Dumoulin to Sainte-Colombe, without telling him the real object of his mission, to ask this experienced woman to procure a fine young girl, tall, and with red hair. Once found, a costume exactly resembling that worn by Adrienne, and of which the Princess de Saint-Dizier gave the description to Rodin (though herself ignorant of this new plot), was to complete the deception. The rest is known, or may be guessed. The unfortunate girl, who acted as Adrienne’s double, believed she was only aiding in a jest. As for Agricola, he had received a letter, in which he was invited to a meeting that might be of the greatest importance to Mdlle. de Cardoville.
 See the strange effect of hasheesh. To the effect of this is attributed the kind of hallucination which seized on those unhappy persons, whom the Prince of the Assassins (the Old Man of the Mountain) used as the instruments of his vengeance.
The nuptial bed.
The mild light of a circular lamp of oriental alabaster, suspended from the ceiling by three silver chains, spreads a faint lustre through the bed-chamber of Adrienne de Cardoville.
The large ivory bedstead, inlaid with mother-of-pearl, is not at present occupied, and almost disappears beneath snowy curtains of lace and muslin, transparent and vapory as clouds. On the white marble mantlepiece, from beneath which the fire throws ruddy beams on the ermine carpet, is the usual basket filled with a bush of red camellias, in the midst of their shining green leaves. A pleasant aromatic odor, rising from a warm and perfumed bath in the next room, penetrates every corner of the bed-chamber. All without is calm and silent. It is hardly eleven o’clock. The ivory door, opposite to that which leads to the bath-room, opens slowly. Djalma appears. Two hours have elapsed since he committed a double murder, and believed that he had killed Adrienne in a fit of jealous fury.