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.
Christopher Lee
as Count Ludwig Karnstein
Adriana Ambesi
as Laura Karnstein
Ursula Davis
as Ljuba
José Campos
as Friedrich Klauss
Véra Valmont
as Annette
Carla Calò
as Ljuba's Mother (as Cicely Clayton)
José Villasante
as Cedric
John Karlsen
as Franz Karnstein (uncredited)
Ignazio Balsamo
as
Angel Midlin
as
Nela Conjiu
as
