Curse Of The Vampyr (1971)

aka’s: Llamada Del Vampiro/Aquelarre De Vampiros

A small rural Spanish village of the present is haunted by vampires. Dr. Dora Maeterlick (Diana Sorel) is called to a nearby castle to cure the father of Baron Carl von Rysselbert (Nicholas Ney) who suffers from a strange blood disease. Erika (Beatriz Elorrieta), assistant to the Doctor, falls in love with Carl. But Carl is a vampire and pretty soon he makes Erika his vampire bride. From now on Dr. Maeterlick plunges into a nightmarish whirl of dark happenings. Also stars Inés Morales.