In 1830, the Karnstein heirs use the blood of an innocent to bring forth the evil that is the beautiful Mircalla - or as she was in 1710, Carmilla. The nearby Finishing School offers rich pickings not only in in the blood of nubile young ladies but also with the headmaster who is desperate to become Mircalla's disciple, and the equally besotted and even more foolish author Richard Lestrange.
Barbara Jefford
as Countess Herritzen
Ralph Bates
as Giles Barton
Suzanna Leigh
as Janet Playfair
Yutte Stensgaard
as Mircalla / Carmilla Karnstein
Michael Johnson
as Richard Lestrange
Helen Christie
as Miss Simpson
Mike Raven
as Count Karnstein
Pippa Steel
as Susan Pelley
Christopher Cunningham
as Coachman
Harvey Hall
as Inspector Heinrich
Michael Brennan
as Landlord
Judy Matheson
as Amanda