The Ghost of St. Michael's

William Lamb (Will Hay) is hired by a school recently transferred because of World War II to the remote Dunbain Castle on the Isle of Skye, Scotland. The sound of bagpipes signals the death of a member of staff. Two die and Lamb is initially regarded as a suspect. With his friend appointed as the new headmaster (and the next potential victim) Lamb must solve the mystery of the mysterious murders with the assistance of mischievous know-all schoolboy Percy Thorne.