The Sadistic Baron Von Klaus (1962)
In the village of Holfen, a number of young women are found stabbed to death by what is determined to be an ancient dagger with a curved and rusty blade . The superstitious locals believe the murders to be the fulfillment of a curse placed on them in the 17th century by Baron Von Klaus, a sadistic libertine who killed many women before dying in the swamps surrounding his castle. The Baron's spirit is said to live on in his male descendants, but Von Klaus heir Ludwig (Hugo Blanco) along with his girlfriend (Paula Martel) don't arrive in town until the day after the latest murder . He is entrusted with a key to his ancestor's torture dungeon and begged to bring an end to the family curse by visiting it, destroying it, and leaving the castle, never to return again. (IMDB ma-cortes) NL