The Ninth Configuration

Published in 1967 and then extensively revised in 1978, The Ninth Configuration is a fascinating look at madness, philosophy, and the nature of religious belief.

William Peter Blatty is most well-known for his novel The Exorcist, and his Academy-award winning screenplay for the movie. He also wrote a sequel to The Exorcist, Legion, and directed Exorcist III as well as the film version of The Ninth Configuration. Mark Kermode is a well-known film scholar and expert on William Peter Blatty's fiction and films.