The film is also known as Seed of Terror (American reissue title).
Several years after his death by electrocution in the late 1930s, ghoulish rapist/murderer Caleb Croft (Michael Pataki) rises from his crypt and brutally assaults young Leslie Hollander (Kitty Vallacher). Leslie becomes pregnant by Croft and delivers a baby boy, whom she nurses with bottles of blood. The child matures into the ruggedly handsome James Eastman (William Smith), who sets out on a mission to find and kill his diabolical father. Eastman enrolls in a college night course that his father is teaching as Professor Lockwood. Following a séance hosted by the professor for his students, James confronts his father in a showdown between good and evil.
William Smith as James Eastman
Michael Pataki as Caleb Croft
Lyn Peters as Anne Arthur
Diane Holden as Anita Jacoby
Lieux Dressler as Olga
Eric Mason as Lieutenant Panzer
Jay Adler as Old Zack
Jay Scott as Paul
William Guhl as Sergeant Duffy
Margaret Fairchild as Miss Fenwick
Carmen Argenziano as Sam
Abbi Henderson as Carol Moskowitz
Kitty Vallacher as The Unwilling Mother
Grave of the Vampire was made on an estimated budget of $50,000.