The Exorcist III is a 1990 American supernatural horror film written and directed by William Peter Blatty. It is the third installment of The Exorcist series and a film adaptation of Blatty's novel Legion (1983). The film stars George C. Scott, Ed Flanders, Jason Miller, Scott Wilson and Brad Dourif. This is the only Exorcist film not to be distributed theatrically by Warner Bros., though Warner Bros. subsequently gained distribution rights.