Exorcist 2: The Heretic (1977)
Five years after her encounter with the demon, Regan MacNeil (Linda Blair) is plagued with nightmares. Has the demon returned? With the help of a Vatican investigator (hammy Richard Burton) and a hypnotic research specialist (Louise Fletcher), they attempt to free Regan from the grip of her nightmares and banish the demon for good. Includes an alternate opening sequence, and trailer.