A behind-the-scenes retrospective made for the twenty-fifth anniversary of the classic horror film, The Exorcist. Includes interviews with Linda Blair and the other stars of the film, along with commentary from the director and writer on some of the deeper meanings behind the elements they used to terrify their audiences, and previously unreleased footage including make-up tests and deleted scenes.

When a charming 12-year-old girl takes on the characteristics and voices of others, doctors say there is nothing they can do. As people begin to die, the girl's mother realizes her daughter has been possessed by the devil--and that her daughter's only possible hope lies with two priests and the ancient rite of demonic exorcism.