Willoughby Braddock did not hesitate. The idea of being alone in a small semi-detached house with a desperate criminal who was probably armed to the gills meant nothing to him now. In fact, he rather preferred it. He slid silently through the back door in the fellow’s wake; and having removed his shoes, climbed the kitchen stairs. A noise from above told him that he was on the right track. Whatever it was that the furtive bloke was doing, he was doing it upstairs. As for Chimp Twist, he was now going nicely. The operations which he was conducting were swift and simple. Once he had ascertained by a survey through the kitchen window that his enemy, Hash, was not on the premises, all his nervousness had vanished. Possessing himself of the chisel which he had placed in the drawer of the kitchen table in readiness for just such an emergency, he went briskly upstairs. The light was burning in the hall and also in the drawing-room; but the absence of sounds encouraged him to believe that Sam, like Hash, was out. This proved to be the case, and he went on his way completely reassured. All he wanted was five minutes alone and undisturbed, for the directions contained in Mr. Finglass’ letter had been specific; and once he had broken through the door of the top back bedroom, he anticipated no difficulty in unearthing the buried treasure. It was, Mr. Finglass had definitely stated, a mere matter of lifting a board. Chimp Twist did not sing as he climbed the stairs, for he was a prudent man, but he felt like singing. A sharp cracking noise came to Willoughby Braddock’s ears as he halted snakily on the first landing. It sounded like the breaking open of a door. And so it was. Chimp, had the conditions been favourable, would have preferred to insinuate himself into Hash’s boudoir in a manner involving less noise; but in this enterprise of his time was of the essence and he had no leisure for niggling at locks with a chisel. Arriving on the threshold, he raised his boot and drove it like a battering-ram. The doors of suburban villas are not constructed to stand rough treatment. If they fit within an inch or two and do not fall down when the cat rubs against them, the architect, builder and surveyor shake hands and congratulate themselves on a good bit of work. And Chimp, though a small man, had a large foot. The lock yielded before him and the door swung open. He went in and lit the gas. Then he took a rapid survey of his surroundings. Half-way up the second flight of stairs, Willoughby Braddock stood listening. His face was pink and determined. As far as he was concerned, Aunt Julia might go and boil herself. Dinner or no dinner, he meant to see this thing through. Chimp wasted no time.