The Exorcist, a 1973 horror film directed by William Friedkin, explores the demonic possession of a young girl and her mother's search for salvation through an exorcism. The film's opening scene incorporates suspenseful visuals, eerie diegetic music, and notable editing techniques that introduce key characters and themes of dread and tension. Religious symbolism is prominent, exemplified by the fleeting appearance of '666' and the transformation of the title's 'x' into an upside-down cross, heightening the film's chilling atmosphere.