Sea Fog: crime classic

I think my first notion was that this was the cry of some animal, trapped close by, or seized by another. But on the instant it came again, and I knew it then for the cry, desperate, terrorised, of a man in deadly fear and peril. I had sprung to my elbow at the first sound: at the second I looked sharply through the opening of the chains into the ground floor beneath me. The man of the map had gone; there, plainly outlined in the bracken, was the place where he had slept, but he and his bot...