A woman writing a book called "High Satanic Rites," about vampirism in modern-day Monterey, California, commits suicide while under the power of an evil priest. The woman's brother, Mark, sticks his nose in the police investigation and more dead bodies show up, drained of blood. Mark's ex-girlfriend, his sister's research assistant, lends a hand and falls in love with him again. Mark confronts the priest in the basement of a church, where 180 years ago some nuns were praying and conjured the Devil. The Foul One used to enjoy watching Mark and his sister playing near the church as children. Now he wants to initiate both of them into the vampire's coven. Mark tries to escape from the priest and his vampire slaves, but crashes his car and dies.
The fade out of this daffy and very poor horror flick is memorable: Mark, bloodied and disfigured from the accident, stands before an unholy altar to wed to his dead, vampirized sister.
SATAN'S BLACK WEDDING originally played in theaters on a double-bill with the more well-known CRIMINALLY INSANE. Both films are a real endurance test for even the most hardened Z-movie enthusiast. Director Philip Miller is really Nick Phillips, who also directed CRIMINALLY INSANE.