Movie · 1990
Is The Exorcist III based on a book?
Quick answer
Yes. The Exorcist III is based on the book Legion by William Peter Blatty (1983).
The movie was released in 1990.
The book behind The Exorcist III
Legion
by William Peter Blatty · first published 1983 · horror fiction
1983 novel by William Peter Blatty.
Common questions
Is The Exorcist III based on a book?
Yes. The Exorcist III is based on the book Legion by William Peter Blatty (1983).
Who wrote the book The Exorcist III is based on?
Legion was written by William Peter Blatty and first published in 1983.
Should I read the book before watching?
If you like knowing the full story and characters first, read Legion before you watch. Adaptations often change or cut plotlines, so the book is a different experience even if you've seen the movie.
More screen adaptations of William Peter Blatty's books
- The Exorcist (film, 1973)
- The Exorcist: Believer (film, 2023)
- The Exorcist (TV, 2016)