Weeks after her return from a European holiday, young Australian tourist Madeline Fisher continues to be haunted by a nightmare vision that first assailed her during a vision to a fairytale castle in the Austrian Alps. Is it a sign of madness? A premonition of danger? Whatever the case, the ghastly fantasy sets in train a series of sinister events that leads Madeline, and the indomitable Inspector Hornsley, back to Austria to confront her fears, and the terrifying secret of her past.