Brora, the post-town of Gavon, lies some six miles to the south-west, and from it a track over the moor leads to the rapids immediately above the Picts’ pool, across which by somewhat extravagant striding from boulder to boulder a man can pass dry-foot when the river is low, and make his way up a steep path to the north of the basaltic rock, and so to the village. But this transit demands a steady head, and at the best is a somewhat giddy passage. Otherwise the road between it and Brora lies in a long detour higher up the moor, passing by the gates of Gavon Lodge, where I was stopping. For some vague and ill-defined reason the pool itself and the Picts’ Castle had an uneasy reputation on the country side, and several times trudging back from a day’s fishing I have known my gillie take a longish circuit, though heavy with fish, rather than make this short cut in the dusk by the castle. On the first occasion when Sandy, a strapping yellow-bearded viking of twenty-five, did this he gave as a reason that the ground round about the castle was “mossy,” though as a God-fearing man, he must have known he lied. But on another occasion he was more frank, and said that the Picts’ pool was “no canny” after sunset. I am now inclined to agree with him, though, when he lied about it, I think it was because as a God-fearing man he feared the devil also. It was on the evening of September 14 that I was walking back with my host, Hugh Graham, from the forest beyond the lodge. It had been a day unseasonably hot for the time of year, and the hills were blanketed with soft, furry clouds. Sandy, the gillie of whom I have spoken, was behind with the ponies, and, idly enough, I told Hugh about his strange distaste for the Picts’ pool after sunset. He listened, frowning a little. “That’s curious,” he said. “I know there is some dim local superstition about the place, but last year certainly Sandy used to laugh at it. I remember asking him what ailed the place, and he said he thought nothing about the rubbish folk talked. But this year you say he avoids it.” “On several occasions with me he has done so.” Hugh smoked a while in silence, striding noiselessly over the dusky fragrant heather. “Poor chap,” he said, “I don’t know what to do about him. He’s becoming useless.” “Drink?” I asked. “Yes, drink in a secondary manner. But trouble led to drink, and trouble, I am afraid, is leading him to worse than drink.” “The only thing worse than drink is the devil,” I remarked. “Precisely. That’s where he is going. He goes there often.” “What on earth do you mean?” I asked. “Well, it’s rather curious,” said Hugh. “You know I dabble a bit in folklore and local superstition, and I believe I am on the track of something odder than odd. Just wait a moment.”