Evidence was given by a housemaid who had seen the footman in milady's rooms and the coachman who had noticed him leave the house with the morocco-covered box in his hand, carrying it openly by the handle as though sent out with it. It was also proved that Dessaure had changed a thousand-franc note at the little _brasserie_ in the Rue Mesrominil on the evening of the day of the robbery; and, lastly, Detective Brissard came forward with a small antique necklet--the property of the Baroness--which Dessaure had given to the daughter of the _brasserie_ keeper. On this evidence Dessaure was found guilty and sentenced to seven years' imprisonment, the judge remarking that on his release, no doubt, such a close watch would be kept on his movements that a further charge would be made should the prisoner at any time be found in possession of the stolen jewels. The prisoner took his sentence most coolly, and, as the officers were leading him away, turned towards the persons in the court-room and, bowing low, said, "Until then, gentlemen, _au revoir_!" For some months Dessaure was left to serve his sentence in peace, the detectives believing that a taste of prison life might have a salutary effect on him, or at least induce him to confess where the stolen jewels were. True, no promises could be made to him, but at the same time it certainly would not _add_ to his sentence should he divulge the hiding-place of the Baroness de Martigny's jewels. Detective Brissard had several long talks with the convict, but they all ended in the same way, Dessaure saying, "I will serve my sentence and then enjoy what I have earned; you will not catch me a second time." Spite of this uncompromising attitude the detective worked assiduously, doing his utmost to locate the jewels, the hiding-place of which one man alone knew. Finally, however, M. Brissard was obliged to consider the case closed, for the time being, and gave his attention to other matters. So time went on, until Dessaure had but a few months more to serve. Then one day he wrote a letter, in which he asked the person to whom it was addressed, for old times' sake, to supply him with a new suit of clothes and other articles of wearing apparel, saying he would repay the kindness a hundredfold. This letter came back to the prison, the addressee--Mlle. Morant, daughter of the _brasserie_ keeper--having removed several years back. This upset Dessaure greatly, and he asked and received permission to write another letter, which was addressed to the girl's father. Again the letter came back, marked as before. Dessaure's excitement was now great; he cursed and cried in turn. The warders reported that he did not sleep at night, and ate scarcely any food.