Dorrington felt a push at his back and the door was swung to with a bang, and the latch dropped. He was in the dark, trapped in a great iron chamber. "I warned you," shouted Mallows from without; "I warned you you might regret it!" And instantly Dorrington's nostrils were filled with the smell of escaping gas. He realised his peril on the instant. Mallows had given him the bill with the idea of silencing him by murder and recovering it. He had pushed him into the oven and had turned on the gas. It was dark, but to light a match would mean death instantly, and without the match it must be death by suffocation and poison of gas in a very few minutes. To appeal to Mallows was useless--Dorrington knew too much. It would seem that at last a horribly-fitting retribution had overtaken Dorrington in death by a mode parallel to that which he and his creatures had prepared for others. Dorrington's victims had drowned in water--or at least Crofton's had, for I never ascertained definitely whether anybody had met his death by the tank after the Croftons had taken service with Dorrington--and now Dorrington himself was to drown in gas. The oven was of sheet iron, fastened by a latch in the centre. Dorrington flung himself desperately against the door, and it gave outwardly at the extreme bottom. He snatched a loose angle-iron with which his hand came in contact, dashed against the door once more, and thrust the iron through where it strained open. Then, with another tremendous plunge, he drove the door a little more outward and raised the angle-iron in the crack; then once more, and raised it again. He was near to losing his senses, when, with one more plunge, the catch of the latch, not designed for such treatment, suddenly gave way, the door flew open, and Dorrington, blue in the face, staring, stumbling and gasping, came staggering out into the fresher air, followed by a gush of gas. [Illustration: "HAULED THE STRUGGLING WRETCH ACROSS THE ROOM."] Mallows had retreated to the rooms behind, and thither Dorrington followed him, gaining vigour and fury at every step. At sight of him the wretched Mallows sank in a corner, sighing and shivering with terror. Dorrington reached him and clutched him by the collar. There should be no more honour between these two thieves now. He would drag Mallows forth and proclaim him aloud; and he would keep that £10,000 bill. He hauled the struggling wretch across the room, tearing off the crêpe whiskers as he came, while Mallows supplicated and whined, fearing that it might be the other's design to imprison _him_ in the enamelling oven. But at the door of the room against that containing the oven their progress came to an end, for the escaped gas had reached the lighted candle, and with one loud report the partition wall fell in, half burying Mallows where he lay, and knocking Dorrington over.