“So far, so good,” said Holmes, when the doctor had at last left the room. “It at least bears out the theory that it is on the side of the Lower Gill Moor that we must hope for results. The police have really done nothing locally, save the arrest of these gipsies. Look here, Watson! There is a watercourse across the moor. You see it marked here in the map. In some parts it widens into a morass. This is particularly so in the region between Holdernesse Hall and the school. It is vain to look elsewhere for tracks in this dry weather, but at that point there is certainly a chance of some record being left. I will call you early to-morrow morning, and you and I will try if we can throw some little light upon the mystery.” The day was just breaking when I woke to find the long, thin form of Ho