Lust for a Vampire (1971)
In 1830, forty years to the day since the last manifestation of their dreaded vampirism, the Karnstein heirs use the blood of an innocent to bring forth the evil that is the beautiful Mircalla or as she was in 1710, Carmilla
Fear in the Night (1972)
A young woman recovering from a nervous breakdown moves with her husband to a boys school, and finds herself being terrorized by a mysterious one armed man, but nobody believes her