Count Karnstein sends for a doctor to help his sick daughter Laura. Her nurse believes she is possessed by the spirit of a dead ancestor, Carmilla. A young woman becomes intrigued by the mysterious deaths surrounding Laura after a carriage accident outside the castle forces her to stay. They become close friends until Laura becomes convinced the spirit of Carmilla is forcing her to kill.

• Hispamer Films
• E.I. Associates Producers
• Christopher Lee
• Adriana Ambesi
• Ursula Davis
• José Campos
• Véra Valmont
• Carla Calò
• José Villasante
• John Karlsen