Two bedroom doors faced him on the other side of the passage. He opened that which was immediately opposite, and entered a bedroom by no means austerely tidy. Some sticks and fishing-rods stood confusedly in one corner, a pile of books in another. The housemaid's hand had failed to give a look of order to the jumble of heterogeneous objects left on the dressing-table and the mantel-shelf--pipes, pen-knives, pencils, keys, golf-balls, old letters, photographs, small boxes, tins and bottles. Two fine etchings and some water-color sketches hung on the walls; leaning against the end of the wardrobe, unhung, were a few framed engravings. A row of shoes and boots was ranged beneath the window. Trent crossed the room and studied them intently; then he measured some of them with his tape, whistling very softly. This done, he sat on the side of the bed, and his eyes roamed gloomily about the room. The photographs on the mantel-shelf attracted him presently. He rose and examined one representing Marlowe and Manderson on horseback. Two others were views of famous peaks in the Alps. There was a faded print of three youths--one of them unmistakably his acquaintance of the haggard blue eyes--clothed in tatterdemalion soldier's gear of the sixteenth century. Another was a portrait of a majestic old lady, slightly resembling Marlowe. Trent, mechanically taking a cigarette from an open box on the mantel-shelf, lit it and stared at the photographs. Next he turned his attention to a flat leathern case that lay by the cigarette-box. It opened easily. A small and light revolver of beautiful workmanship was disclosed, with a score or so of loose cartridges. On the stock were engraved the initials "J. M." A step was heard on the stairs, and as Trent opened the breech and peered into the barrel of the weapon, Inspector Murch appeared at the open door of the room. "I was wondering"--he began; then stopped as he saw what the other was about. His intelligent eyes opened slightly. "Whose is the revolver, Mr. Trent?" he asked in a conversational tone. "Evidently it belongs to the occupant of the room, Mr. Marlowe," replied Trent with similar lightness, pointing to the initials. "I found this lying about on the mantel-piece. It seems a handy little pistol to me, and it has been very carefully cleaned, I should say, since the last time it was used. But I know little about firearms." "Well, I know a good deal," rejoined the inspector quietly, taking the revolver from Trent's outstretched hand. "It's a bit of a specialty with me, is firearms, as I think you know, Mr. Trent. But it don't require an expert to tell one thing." He replaced the revolver in its case on the mantel-shelf, took out one of the cartridges, and laid it on the spacious palm of one hand; then, taking a small object from his waistcoat pocket, he laid it beside the cartridge. It was a little leaden bullet, slightly battered about the nose, and having upon it some bright new scratches.