But there were ample signs that I had not come upon a false scent. This was certainly where the man lived. Some blankets rolled in a waterproof lay upon that very stone slab upon which Neolithic man had once slumbered. The ashes of a fire were heaped in a rude grate. Beside it lay some cooking utensils and a bucket half-full of water. A litter of empty tins showed that the place had been occupied for some time, and I saw, as my eyes became accustomed to the checkered light, a pannikin and a half-full bottle of spirits standing in the corner. In the middle of the hut a flat stone served the purpose of a table, and upon this stood a small cloth bundle—the same, no doubt, which I had seen through the telescope upon the shoulder of the boy. It contained a loaf of bread, a tinned tongue, and two tins of preserved peaches. As I set it down again, after having examined it, my heart leaped to see that beneath it there lay a sheet of paper with writing upon it. I raised it, and this was what I read, roughly scrawled in pencil: “Dr. Watson has gone to Coombe Tracey.”

For a minute I stood there with the paper in my hands thinking out the meaning of this curt message. It was I, then, and not Sir Henry, who was being dogged by this secret man. He had not followed me himself, but he had set an agent—the boy, perhaps—upon my track, and this was his report. Possibly I had taken no step since I had been upon the moor which had not been observed and reported. Always there was this feeling of an unseen force, a fine net drawn round us with infinite skill and delicacy, holding us so lightly that it was only at some supreme moment that one realised that one was indeed entangled in its meshes.

If there was one report there might be others, so I looked round the hut in search of them. There was no trace, however, of anything of the kind, nor could I discover any sign which might indicate the character or intentions of the man who lived in this singular place, save that he must be of Spartan habits and cared little for the comforts of life. When I thought of the heavy rains and looked at the gaping roof I understood how strong and immutable must be the purpose which had kept him in that inhospitable abode. Was he our malignant enemy, or was he by chance our guardian angel? I swore that I would not leave the hut until I knew.