Daughters of Darkness (1971)
Ostend, Belgium. In a decadent seaside hotel, Stefan and Valerie, a newlywed couple, meet the mysterious Countess Báthory and Ilona, her secretary.
Directed by: Harry Kümel
Starring: Delphine Seyrig, John Karlen, Danielle Ouimet, Andrea Rau, Paul Esser, Georges Jamin
Links: IMDb, Movie posters, Movie stills