What has the villain been doing here?”

“At my suggestion a couple of the county police were summoned to be present, and I then endeavoured to raise the stone by pulling on the cravat. I could only move it slightly, and it was with the aid of one of the constables that I succeeded at last in carrying it to one side. A black hole yawned beneath into which we all peered, while Musgrave, kneeling at the side, pushed down the lantern.

“A small chamber about seven feet deep and four feet square lay open to us. At one side of this was a squat, brass-bound wooden box, the lid of which was hinged upward, with this curious old-fashioned key projecting from the lock. It was furred outside by a thick layer of dust, and damp and worms had eaten through the wood, so that a crop of livid fungi was growing on the inside of it. Several discs of metal, old coins apparently, such as I hold here, were scattered over the bottom of the box, but it contained nothing else.

“At the moment, however, we had no thought for the old chest, for our eyes were riveted upon that which crouched beside it. It was the figure of a man, clad in a suit of black, who squatted down upon his hams with his forehead sunk upon the edge of the box and his two arms thrown out on each side of it. The attitude had drawn all the stagnant blood to the face, and no man could have recognized that distorted liver-coloured countenance; but his height, his dress, and his hair were all sufficient to show my client, when we had drawn the body up, that it was indeed his missing butler. He had been dead some days, but there was no wound or bruise upon his person to show how he had met his dreadful end. When his body had been carried from the cellar we found ourselves still confronted with a problem which was almost as formidable as that with which we had started.

“I confess that so far, Watson, I had been disappointed in my investigation. I had reckoned upon solving the matter when once I had found the place referred to in the Ritual; but now I was there, and was apparently as far as ever from knowing what it was which the family had concealed with such elaborate precautions. It is true that I had thrown a light upon the fate of Brunton, but now I had to ascertain how that fate had come upon him, and what part had been played in the matter by the woman who had disappeared. I sat down upon a keg in the corner and thought the whole matter carefully over.

“You know my methods in such cases, Watson. I put myself in the man's place, and, having first gauged his intelligence, I try to imagine how I should myself have proceeded under the same circumstances. In this case the matter was simplified by Brunton's intelligence being quite first-rate, so that it was unnecessary to make any allowance for the personal equation, as the astronomers have dubbed it. He knew that something valuable was concealed. He had spotted the place. He found that the stone which covered it was just too heavy for a man to move unaided. What would he do next? He could not get help from outside, even if he had someone whom he could trust, without the unbarring of doors and considerable risk of detection. It was better, if he could, to have his helpmate inside the house. But whom could he ask? This girl had been devoted to him. A man always finds it hard to realize that he may have finally lost a woman's love, however badly he may have treated her. He would try by a few attentions to make his peace with the girl Howells, and then would engage her as his accomplice. Together they would come at night to the cellar, and their united force would suffice to raise the stone. So far I could follow their actions as if I had actually seen them.

“But for two of them, and one a woman, it must have been heavy work, the raising of that stone.