"The Exorcist III" is a horror film released in 1990, directed by William Peter Blatty. It serves as a sequel to the original 1973 film, The Exorcist, and is based on Blatty's novel, Legion. The story follows Detective Kinderman, played by George C. Scott, as he investigates a series of gruesome murders that seem to be connected to the demonic possession of a young boy, Regan MacNeil. The film explores themes of faith, evil, and the supernatural, featuring a chilling performance by Brad Dourif as the possessed character, Father Karras. Unlike its predecessor, "The Exorcist III" focuses more on psychological horror and suspense rather than overt supernatural elements, making it a unique entry in the franchise.