Scream of the Demon Lover (1970)

When a beautiful biochemist arrives at a foreboding castle to work for a sinister baron, she unlocks a nightmare of dark romance, sexual violence, and grisly family secrets.

Directed by: José Luis Merino

Starring: Erna Schürer, Carlos Quiney, Agostina Belli, Cristiana Galloni, Antonio Jiménez Escribano, Mariano Vidal Molina

Links: IMDb, Movie posters, Movie stills