Criswell

Aliens resurrect dead humans as zombies and vampires to stop human kind from creating the Solaranite (a sort of sun-driven bomb) (imdb)

John and his girlfriend Shirley go in search of a cemetary in order to inspire John for writing his next horror story. After they crash the car, they wander into the graveyard and encounter the dancing dead, a full moon spectacle overseen by the Ruler of the Dark. (imdb)

Phony spiritualist raises the dead. (imdb)