The Exorcist is a 1973 American supernatural horror film, adapted by William Peter Blatty from his 1971 novel of the same name, and starring Ellen Burstyn, Linda Blair, Max von Sydow, and Jason Miller. The film is part of The Exorcist franchise. The book, inspired by the 1949 exorcism of Roland Doe, deals with the demonic possession of a 12-year-old girl and her mother’s attempts to win back her child through an exorcism conducted by two priests.Lankester Merrin is a veteran Catholic priest and exorcist who is on an archaeological dig in Iraq. There he finds an amulet that resembles the statue of Pazuzu, a demon whom Merrin had defeated years before. Merrin then realizes the demon has returned to seek revenge.