Not only did William Peter Blatty write the second sequel to this film, he directed it as well
.... Friedkin has said that he does not believe that the "head-spinning" actually 
occurred,... [DOC] [TLE] Exorcist II: The Heretic - Wikipedia [PAR] Exorcist II: The Heretic is a 1977 American supernatural horror film directed by ... 
film The Exorcist based on the 1971 novel by William Peter Blatty, and part of The 
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