The Exorcist by William Peter Blatty

Four decades after it first shook the nation, then the world, William Peter Blatty’s thrilling masterwork of faith and demonic possession returns in an even more powerful form. Raw and profane, shocking and blood-chilling, it remains a modern parable of good and evil and perhaps the most terrifying novel ever written.
©2011 William Peter Blatty (P)2011 HarperCollinsPublishers