 A strange group of people converge on remote, eerie Glennye Castle which is reputedly haunted by the ghost of a monk. One of the guests is actually a Nazi spy and the real father of Lady Glennye s son. She threatens to expose him, but he is shot after the arrival of a British agent. Lady Glennye also dies and "The Glennye Phantom" - a hooded skeleton - puts in an appearance too.