No amount of searching or questioning led to any result. The old maid had heard nothing before the exclamations of the policeman: no noise of a struggle, no cry of pain, no sound of quarreling; and Major Parbury neither. Moreover, there was no suspicious clue found, no trace of blood, nothing to lead them to suppose that the unfortunate Chapman had been in one of those rooms. "It's queer," muttered the examining-magistrate, "it's all very queer. . . ." And he confessed, ingenuously, "I feel more and more at sea. . . . There is a whole series of circumstances that are partly beyond me. What do you make of it, M. Lenormand?" M. Lenormand was on the point of letting off one of those pointed rejoinders in which he was wont to give vent to his chronic ill-temper, when Gourel appeared upon the scene, all out of breath. "Chief," he panted, "they've found this . . . downstairs . . . in the office . . . on a chair. . . ." It was a parcel of moderate dimensions, wrapped up in a piece of black serge. "Did they open it?" asked the chief. "Yes, but when they saw what the parcel contained, they did it up again exactly as it was . . . fastened very tight, as you can see. . . ." "Untie it." Gourel removed the wrapper and disclosed a black diagonal jacket and trousers, which had evidently been packed up in a hurry, as the creases in the cloth showed. In the middle was a towel, covered with blood, which had been dipped in water, in order, no doubt, to destroy the marks of the hands that had been wiped on it. Inside the napkin was a steel dagger, with a handle encrusted with gold. This also was red with blood, the blood of three men stabbed within the space of a few hours by an invisible hand, amid the crowd of three hundred people moving about in the huge hotel. Edwards, the man-servant, at once identified the dagger as belonging to Mr. Kesselbach. He had seen it on the table on the previous day, before the assault committed by Lupin. "Mr. Manager," said the chief detective, "the restriction is over. Gourel, go and give orders to leave the doors free." "So you think that Lupin has succeeded in getting out?" asked M. Formerie. "No. The perpetrator of the three murders which we have discovered is in one of the rooms of the hotel, or, rather, he is among the visitors in the hall or in the reception-rooms. In my opinion, he was staying in the hotel." "Impossible! Besides, where would he have changed his clothes? And what clothes would he have on now?" "I don't know, but I am stating a fact." "And you are letting him go? Why, he'll just walk out quietly, with his hands in his pockets!" "The one who walks away like that, without his luggage, and who does not return, will be the criminal. Mr. Manager, please come with me to the office. I should like to make a close inspection of your visitors' book."