The gloomy look on the notary's face, which he hastened to lay aside when he saw Birotteau, grew out of certain mysterious circumstances which were at the bottom of the secret fortune so rapidly acquired by du Tillet. The scheme originally planned by that adventurer had changed on the first Sunday when he saw, at Birotteau's house, the relations existing between Monsieur and Madame Roguin. He had come there not so much to seduce Madame Cesar as to obtain the offer of her daughter's hand by way of compensation for frustrated hopes, and he found little difficulty in renouncing his purpose when he discovered that Cesar, whom he supposed to be rich, was in point of fact comparatively poor. He set a watch on the notary, wormed himself into his confidence, was presented to la belle Hollandaise, made a study of their relation to each other, and soon found that she threatened to renounce her lover if he limited her luxuries. La belle Hollandaise was one of those mad-cap women who care nothing as to where the money comes from, or how it is obtained, and who are capable of giving a ball with the gold obtained by a parricide. She never thought of the morrow; for her the future was after dinner, and the end of the month eternity, even if she had bills to pay. Du Tillet, delighted to have found such a lever, exacted from la belle Hollandaise a promise that she would love Roguin for thirty thousand francs a year instead of fifty thousand,--a service which infatuated old men seldom forget.
One evening, after a supper where the wine flowed freely, Roguin unbosomed himself to du Tillet on the subject of his financial difficulties. His own estate was tied up and legally settled on his wife, and he had been led by his fatal passion to take from the funds entrusted to him by his clients a sum which was already more than half their amount. When the whole were gone, the unfortunate man intended to blow out his brains, hoping to mitigate the disgrace of his conduct by making a demand upon public pity. A fortune, rapid and secure, darted before du Tillet's eyes like a flash of lightning in a saturnalian night. He promptly reassured Roguin, and made him fire his pistols into the air.
"With such risks as yours," he said, "a man of your calibre should not behave like a fool and walk on tiptoe, but speculate--boldly."
He advised Roguin to take a large sum from the remaining trust-moneys and give it to him, du Tillet, with permission to stake it bravely on some large operation, either at the Bourse, or in one of the thousand enterprises of private speculation then about to be launched. Should he win, they were to form a banking-house, where they could turn to good account a portion of the deposits, while the profits could be used by Roguin for his pleasures. If luck went against them, Roguin was to get away and live in foreign countries, and trust to /his friend/ du Tillet, who would be faithful to him to the last sou. It was a rope thrown to a drowning man, and Roguin did not perceive that the perfumer's clerk had flung it round his neck.
Master of Roguin's secret, du Tillet made use of it to establish his power over wife, mistress, and husband. Madame Roguin, when told of a disaster she was far from suspecting, accepted du Tillet's attentions, who about this time left his situation with Birotteau, confident of future success. He found no difficulty in persuading the mistress to risk a certain sum of money as a provision against the necessity of resorting to prostitution if misfortunes overtook her. The wife, on the other hand, regulated her accounts, and gathered together quite a little capital, which she gave to the man whom her husband confided in; for by this time the notary had given a hundred thousand francs of the remaining trust-money to his accomplice. Du Tillet's relations to Madame Roguin then became such that her interest in him was transformed into affection and finally into a violent passion. Through his three sleeping-partners Ferdinand naturally derived a profit; but not content with that profit, he had the audacity, when gambling at the Bourse in their name, to make an agreement with a pretended adversary, a man of straw, from whom he received back for himself certain sums which he had charged as losses to his clients. As soon as he had gained fifty thousand francs he was sure of fortune. He had the eye of an eagle to discern the phases through which France was then passing. He played low during the campaign of the allied armies, and high on the restoration of the Bourbons. Two months after the return of Louis XVIII., Madame Roguin was worth two hundred thousand francs, du Tillet three hundred thousand, and the notary had been able to get his accounts once more into order.
La belle Hollandaise wasted her share of the profits; for she was secretly a prey to an infamous scoundrel named Maxime de Trailles, a former page of the Emperor. Du Tillet discovered the real name of this woman in drawing out a deed. She was Sarah Gobseck. Struck by the coincidence of the name with that of a well-known usurer, he went to the old money-lender (that providence of young men of family) to find out how far he would back the credit of his relation. The Brutus of usurers was implacable towards his great-niece, but du Tillet himself pleased him by posing as Sarah's banker, and having funds to invest.