He could not have crossed it, for the place was wider than I had thought. A ring of black precipices came down to within half a mile of the shore, and between them was a big stream—long, shallow pools at the sea end and a chain of waterfalls above. He had gone to earth like a badger somewhere, and I dared not move in case he might be watching me from behind a boulder. But even as I hesitated he appeared again, fording the stream, his face set on the road we had come. Whatever his errand was he had finished it, and was posting back to his master. For a moment I thought I should follow him, but another instinct prevailed. He had not come to this wild place for the scenery. Somewhere down in the glen there was something or somebody that held the key of the mystery. It was my business to stay