The Exorcist (1973) is a horror classic that tells the story of a young girl possessed by a powerful demonic force. When all other attempts to help her fail, a priest is called upon to perform an exorcism. With a gripping story and intense visuals, The Exorcist
From Wikipedia
The Exorcist is a 1973 American supernatural horror film directed by William Friedkin and produced by William Peter Blatty, who adapted his own 1971 novel. The film stars Ellen Burstyn, Max von Sydow, Jason Miller, and Linda Blair, and follows the demonic possession of a young girl and the attempt to rescue her through an exorcism by two Catholic priests.