Grandisson was actually on the move and absent from Heidelberg when letters arrived from Frankfurt-on-the-Main dated April 7th; one was addressed to the governor of the town, the other to the criminal judge, and their contents threw a new and lurid light upon the mysterious stranger. The Thurn and Taxis post-wagon had been robbed twice within two years, between Eisenach and Frankfurt, and so effectually that well secured cash boxes packed away inside the vehicle had disappeared. The first occasion was on October 13, 1812, when all packets of money destined for Frankfurt were purloined from the post-cart; and the second on February 14, 1814, when a packet containing more than 4,947 florins was stolen. Suspicion fell upon a certain passenger remembered by the conductor and others, and who, as it turned out on investigation, had always travelled and been registered under different names. It was subsequently discovered that this man, so generously endowed with aliases, had on February 18th put up at the inn, the Sign of the Anchor, in Eisenach, under the name of Grandisson and there posted a packet of fifty gulden addressed to himself at Heidelberg, which had there been safely handed to Madame Grandisson. The description of the suspicious passenger tallied exactly with that of M. Grandisson so well known in Heidelberg. Besides this, the conductor of the post-cart from which the last theft had been made, insisted that he had seen him in that town. The governor of Heidelberg was so much impressed with these reports that he would have proceeded to arrest Grandisson at once, but the man was absent at the time. The question was then mooted as to the apprehension of Madame Grandisson, who was generally respected as a modest, reputable lady who lived exclusively for her children. She seemed somewhat embarrassed when questioned by the police and asked to explain her husband’s prolonged absence, but evinced no desire to leave the town, and no further steps were taken beyond keeping her under observation. Unhappily for her, fresh revelations were soon forthcoming in which she was implicated. A letter from Madame Grandisson to her husband, directed to what was then his real address, “poste restante Würzburg,” was presently intercepted in the chief post-office. In this letter she enclosed another which had arrived for M. Grandisson and had been opened by her. Her own letter contained little more than references to the other which was signed with the name “Louis Fischer,” and had evidently occasioned her great uneasiness. It was dated from Bornheim near Frankfurt, March 10, 1814, and contained a quantity of obscure and suspicious matter.