The Exorcist

Nobody expected it, nobody believed it, and nobody could stop it. The one hope, the only hope: THE EXORCIST. Based on the 1971 novel by William Peter Blatty, The Exorcist marries three different scenarios into one extraordinary plot. A visiting actress in Washington, D.C., notices dramatic and dangerous changes in the behavior and physical make-up of her 12-year-old daughter. Meanwhile, a young priest at nearby Georgetown University begins to doubt his faith while dealing with his mother's terminal sickness. And, book-ending the story, a frail, elderly priest recognizes the necessity for a show-down with an old demonic enemy.

Made in 1973, this film is very graphic for its time. Although I personally have never actually seen a movie that has truly scared me, this one is pretty darn good. Explore the possibilities before you watch the movie, do research on demons and exorcisms to get your brain thinking in the direction of possibility. That way, when you watch, it will be that more scary.