 A troubled couple and their blind daughter come to Italy to visit a 12th Century castle they ve inherited. Soon they are plagued by unexplained noises, mysteriously broken objects, and the daughter s claims of an unknown nocturnal visitor to her bedroom. When the housekeeper and a local prostitute and are discovered savagely murdered in the castle s dungeon, John must unlock the castle s secret to save himself from jail and his family from the castle s secret inhabitant.