Juve looked at his watch. "Well, I must leave you now and make a report to M. Havard. I'm afraid the murderer has slipped through our fingers." "But you'll come back?" "Of course." "What am I to do meanwhile?" "Nothing, unless you care to go over the hospital again." "And the passes? Are they to be in force still? We have no one in the place but the staff." "That is essential," replied Juve. "I must know with certainty who comes in and goes out. However, anyone known to your doorkeeper who wishes to leave need only sign in a register." IX IN THE REFRIGERATORY It was light in the evening. One by one the rooms in Lâriboisière were being lit up. The one exception was the grim amphitheatre, whose occupants would never need to see again. Suddenly--and if anyone had been present, he would have experienced the most frightful impression it is possible to conceive--a corpse stirred. Having assured himself that the door between the amphitheatre and the gallery was shut, the corpse, shivering with cold, threw off the shroud which enveloped him, and set to work to move his legs and arms about to start up his circulation. Then at the far end of the apartment this living corpse discovered, under a zinc basin attached to the wall, a bundle of linen and garments, which he seized upon. His body shaking with cold, the man dressed himself in haste, and then waited until he considered his clothes sufficiently dry not to attract attention. Carefully ascertaining that the gallery was deserted, he then entered it and walked rapidly to the courtyard. To the right of the main gateway, the smaller gate leading into the Rue Ambroise Paré was open. The man passed under the archway, and in a moment would have been clear of Lâriboisière, when the doorkeeper barred his way. "Excuse me, who goes there?" Then, having looked more closely: "Why it's Doctor Chaleck! You're late in leaving us this evening, doctor. I suppose you've been kept pretty busy in ward 22?" "That's so," replied Chaleck, for it was he. "That's why I'm in a hurry, Charles." And Chaleck, with an impatient gesture, was about to slip out, but the porter stopped him again. "One moment, doctor; you must register first." "Is this a new hospital regulation?" "No, doctor, it's the police who have ordered everyone entering or leaving the hospital to sign his name in this book." The porter, having taken Doctor Chaleck into his lodge, opened a new register, and pointing to half a dozen names already written on the first page, he added: "You'll not be in bad company; you're to sign just below Professor Hugard." Chaleck smiled. "Tell me the latest news, Charles. Do they suspect anyone?" "All I know is that fifty of them came here with dirty shoes, made a hubbub round the patients, put the service out of gear, and in the end caught nobody at all. But if the culprit is still here, he won't get out without the bracelets on his wrists!"