Derues felt some alarm in his dungeon, but his presence of mind and his dissimulation in no wise deserted him, and he swore afresh every day to the truth of his statements. But his last false assertion turned against him: the bond for a hundred thousand livres which he professed to have given to Duclos was a counterfeit which Duclos had annulled by a sort of counter declaration made the same day. Another circumstance, intended to ensure his safety, only redoubled suspicion. On April 8th, notes payable to order to the amount of seventy-eight thousand livres, were received by Monsieur de Lamotte’s lawyer, as if coming from Madame de Lamotte. It appeared extraordinary that these notes, which arrived in an ordinary stamped envelope, should not be accompanied by any letter of advice, and suspicion attached to Madame Derues, who hitherto had remained unnoticed. An inquiry as to where the packet had been posted soon revealed the office, distinguished by a letter of the alphabet, and the postmaster described a servant-maid who had brought the letter and paid for it. The description resembled the Derues’ servant; and this girl, much alarmed, acknowledged, after a great deal of hesitation, that she had posted the letter in obedience to her mistress’s orders. Whereupon Madame Derues was sent as a prisoner to Fort l’Eveque, and her husband transferred to the Grand-Chatelet. On being interrogated, she at length owned that she had sent these notes to Monsieur de Lamotte’s lawyer, and that her husband had given them her in an envelope hidden in the soiled linen for which she had brought him clean in exchange. All this certainly amounted to serious presumptive evidence of guilt, and if Derues had shown himself to the multitude, which followed every phase of the investigation with increasing anxiety, a thousand arms would have willingly usurped the office of the executioner; but the distance thence to actual proof of murder was enormous for the magistracy. Derues maintained his tranquillity, always asserting that Madame de Lamotte and her son were alive, and would clear him by their reappearance. Neither threats nor stratagems succeeded in making him contradict himself, and his assurance shook the strongest conviction. A new difficulty was added to so much uncertainty. A messenger had been sent off secretly with all haste to Lyons; his return was awaited for a test which it was thought would be decisive.