Full Bio William Peter Blatty (born January 7, 1928) is an American writer and filmmaker. The novel The Exorcist, written in 1971, is his most well-known novel; he also penned the subsequent screenplay version of the film, for which he won an Academy Award. He also wrote and directed the sequel, The Exorcist III: Legion.

William Peter Blatty Acting Credits

William Peter Blatty Writing Credits