“When I saw the mark of the parcel by the side of the footprints, I had no doubt as to the robbery,” replied Monsieur Rouletabille. “The thief had not brought a parcel with him; he had made one here—a parcel with the stolen objects, no doubt; and he put it in this corner intending to take it away when the moment came for him to make his escape. He had also placed his heavy boots beside the parcel,—for, see—there are no marks of steps leading to the marks left by the boots, which were placed side by side. That accounts for the fact that the murderer left no trace of his steps when he fled from The Yellow Room, nor any in the laboratory, nor in the vestibule. After entering The Yellow Room in his boots, he took them off, finding them troublesome, or because he wished to make as little noise as possible. The marks made by him _in going_ through the vestibule and the laboratory were subsequently washed out by Daddy Jacques. Having, for some reason or other, taken off his boots, the murderer carried them in his hand and placed them by the side of the parcel he had made,—by that time the robbery had been accomplished. The man then returned to The Yellow Room and slipped under the bed, where the mark of his body is perfectly visible on the floor and even on the mat, which has been slightly moved from its place and creased. Fragments of straw also, recently torn, bear witness to the murderer’s movements under the bed.” “Yes, yes,—we know all about that,” said Monsieur de Marquet. “The robber had another motive for returning to hide under the bed,” continued the astonishing boy-journalist. “You might think that he was trying to hide himself quickly on seeing, through the vestibule window, Monsieur and Mademoiselle Stangerson about to enter the pavilion. It would have been much easier for him to have climbed up to the attic and hidden there, waiting for an opportunity to get away, if his purpose had been only flight.—No! No!—he _had_ to be in The Yellow Room.” Here the Chief intervened. “That’s not at all bad, young man. I compliment you. If we do not know yet how the murderer succeeded in getting away, we can at any rate see how he came in and committed the robbery. But what did he steal?” “Something very valuable,” replied the young reporter. At that moment we heard a cry from the laboratory. We rushed in and found Monsieur Stangerson, his eyes haggard, his limbs trembling, pointing to a sort of bookcase which he had opened, and which, we saw, was empty. At the same instant he sank into the large armchair that was placed before the desk and groaned, the tears rolling down his cheeks, “I have been robbed again! For God’s sake, do not say a word of this to my daughter. She would be more pained than I am.” He heaved a deep sigh and added, in a tone I shall never forget: “After all, what does it matter,—so long as she lives!” “She will live!” said Monsieur Darzac, in a voice strangely touching.