Trivia: Director John Boorman initially didn't want to make the movie as he found the first film distasteful. However, when he saw the story treatment, his perspective changed and he viewed "Exorcist II" as a rebuttal to his perception of the original film's darkness and a tale about "goodness" winning. Boorman subsequently admitted that his views were wrong and that the movie didn't work, and that he shouldn't have made it since he "denied what the audience wanted."
Exorcist II: The Heretic (1977)
1 trivia entry
Directed by: John Boorman
Starring: Max von Sydow, Richard Burton, Louise Fletcher, Linda Blair
Factual error: Father Lamont tears out the Regan doppelganger's heart from where her stomach should be. Even allowing that she's a manifestation of a demon and may not conform to human anatomy, it isn't plausible that Lamont would know to grab for her heart through her abdomen.
Father Lamont: I've flown this route before. It was on the wings of a demon.