A young woman, Laura Karnstein, becomes convinced that she is the latest victim of a curse placed on her family by one of her ancestors, Sheena Karnstein, who was suspected of witchcraft and put to death in centuries past. Concerned for his daughter’s state of mind, Count Karnstein hires a young restorer, Friedrich Klauss, to investigate his family’s history and locate a portrait depicting Sheena in order to prove that she bears no resemblance to his daughter. The unexpected arrival of a young woman, Lyuba, to the isolated castle offers Laura friendship and solace, but her nightmares persists and Friedrich soon uncovers a secret in the castle crypt.