When a museum curator is given the door knocker from a Tudor mansion, the ghostly secrets of Geap Manor's haunted past begin to emerge. In the 1780s, ghastly sounds come from the panelling of the drawing room, and in the 1920s, a ghostly bride stalks the corridors. Then, a schoolteacher attaches the knocker to the door of his home, with fearful consequences reaching out from the past.