On the top floor cries of astonishment re-echoed. The servants had been alarmed by the uproar and, surprised to see the lift stop and nobody get out of it, they opened the door and found a heap of clothing, a false beard, and a wig. Two housemaids and a valet gazed in amazement at these extraordinary properties, and never thought of informing the manager, M. Louis. Meantime, however, that gentleman had hurried through the mazes of the hotel, and had just reached the third floor when he was stopped by the Baronne Van den Rosen, one of the hotel's oldest patronesses. "M. Louis!" she exclaimed, bursting into sobs. "I have just been robbed of my diamond necklace. I left it in a jewel-case on my table before going down to dinner. When I heard the noise just now, I got up and looked through my jewel-case, and the necklace is not there." M. Louis was too dazed to reply. Muller ran up to him. "Princess Sonia Danidoff's pocket-book has been stolen," he announced; "but I have had the hotel doors shut and we shall be sure to catch the thief." The Princess came near to explain matters, but at that moment the servants came down from upstairs, bringing with them the make-up articles which they had found in the lift. They laid these on the ground without a word and M. Louis was staring at them when Muller had a sudden inspiration. "M. Louis, what is the new man on the second floor like?" Just at that instant a servant appeared at the end of the corridor, a middle-aged man with white whiskers and a bald head. "There he is, coming towards us," M. Louis replied. "His name is Arnold." "Good God!" cried Muller; "and the red-headed fellow: the carroty chap?" M. Louis shook his head, not understanding, and Muller tore himself away and rushed down to the hall porter. "Has he gone out? Has anyone gone out?" "No one," said the porter, "except, of course, the servant from the second floor, whom you sent for the police." "The carroty chap?" Muller enquired. "Yes, the carroty chap." Princess Sonia Danidoff lay back in an easy chair, receiving the anxious attentions of Nadine, her Circassian maid. M. Louis was holding salts to her nostrils. The Princess still held in her hands the card left by the mysterious stranger who had just robbed her so cleverly of a hundred and twenty thousand francs. As she slowly came to herself the Princess gazed at the card as if fascinated, and this time her haggard eyes grew wide with astonishment. For upon the card, which hitherto had appeared immaculately white, marks and letters were gradually becoming visible, and the Princess read: "Fan--tô--mas!" XI. MAGISTRATE AND DETECTIVE M. Fuselier was standing in his office in the law courts at Paris, meditatively smoothing the nap of his silk hat. His mind was busy with the enquiries he had been prosecuting during the day, and although he had no reason to be dissatisfied with his day's work he had no clear idea as to what his next steps ought to be.