There are many ruined castles in Scotland. One such lies outside the village of Drim. Hamish begins to hear reports that this castle is haunted and lights have been seen there at night, but he assumes it's some children or maybe the local lads going there to smoke pot. Hamish says to his policeman, Charlie 'Clumsy' Carson, that they will both spend a night there. Hamish Macbeth is back in his 32nd mystery.