A retro Spanish/Italian horror masterpiece from director Jose Luis Merino (ORGY OF THE LIVING DEAD), this eerie, atmospheric and erotic Gothic shocker was distributed in the U.S. by the great Roger Corman as a double feature with THE VELVET VAMPIRE. A beautiful young biochemist travels to a remote castle and soon falls under the sexual spell of a handsome Baron, who is in fact a murderous monster by night. One of the great '70s Eurohorror films!