Exorcist II: The Heretic (1977)
Bizarre nightmares plague Regan MacNeil four years after her possession and exorcism. Has the demon returned? And if so, can the combined faith and knowledge of a Vatican investigator and a research specialist free her from its grasp? 1970s, religion and supernatural, exorcism, possession, hypnosis, pact with the devil, sequel, examination, priest, devil, catholic church, demonic possession, locust, faith healing, supernatural horror