The annual Burns dinner at Thornford Regis is an occasion for bagpipes, haggis and scotch. It ends up an occasion for tragedy when Will Moir, one of the pipers, is found alone, in a tower, dead of an apparent heart attack. Father Tom Christmas, the vicar of the town, is privy to all of the secrets of its inhabitants, and is one of the first to find out that Will Moir was poisoned.