Novelist
William Peter Blatty based his best-seller on the last known Catholic-sanctioned exorcism in the United States. Blatty transformed the little boy in the 1949 incident into a little girl named Regan, played by 14-year-old
Linda Blair. Suddenly prone to fits and bizarre behavior, Regan proves quite a handful for her actress-mother, Chris MacNeil (played by
Ellen Burstyn, although Blatty reportedly based the character on his next-door neighbor
Shirley MacLaine). When Regan gets completely out of hand, Chris calls in young priest Father Karras (
Jason Miller), who becomes convinced that the girl is possessed by the Devil and that they must call in an exorcist: namely, Father Merrin (
Max von Sydow). His foe proves to be no run-of-the-mill demon, and both the priest and the girl suffer numerous horrors during their struggles. The Exorcist received a theatrical rerelease in 2000, in a special edition that added 11 minutes of footage trimmed from the film's original release and digitally enhanced Chris Newman's Oscar-winning sound work. ~ Hal Erickson, All Movie Guide