Scream Blacula Scream (1973)
Director: Bob Kelljan
Stars: William Marshall, Don Mitchell, Pam Grier, Michael Conrad
When seeking revenge on your mother, you shouldn't enlist a vampire to do your bidding. This is a lesson B-movie characters have to learn over and over again.
This time, the lesson involves the vampire Mamuwalde—you can call him Blacula—who's seeking a voodoo cure for his vampirism.