Scottish Ghost Stories

Several years ago, bent on revisiting Perthshire, a locality which had great attractions for me as a boy, I answered an advertisement in a popular ladies' weekly. As far as I can recollect, it was somewhat to this effect: "Comfortable home offered to a gentleman (a bachelor) at moderate terms in an elderly Highland lady's house at Pitlochry. Must be a strict teetotaller and non-smoker. F.M., Box so-and-so."