Quick Plot Summary: Released in 1973, Scream Blacula Scream is a Horror, Fantasy film directed by Bob Kelljan, written by Raymond Koenig. The narrative crafts an atmosphere of dread and suspense, using psychological terror and visual scares. As part of the Blacula Collection, it provides a scannable look at the movie's central conflict involving William Marshall as Blacula / Prince Mamuwalde.