It's hard to believe that it's been forty years since author William Peter Blatty wrote one of the single most terrifying novels the world has ever seen in The Exorcist, but alas, time flies! To celebrate this auspicious anniversary, Blatty has retooled his book a bit, thus creating The Exorcist: 40th Anniversary Edition.

From the Press Release

Forty years ago William Peter Blatty published a novel that changed the literary and cinematic landscape. A masterful and often shocking blend of horror, mystery, and religion, The Exorcist spent fifty-seven weeks on the New York Times bestseller list, including seventeen consecutively at number one, and was turned into an iconic film that received ten Academy Award nominations, with Blatty winning the Oscar for best screenplay. The novel and film spawned countless imitations, but Blatty’s unabashedly profane, terrifying, yet faith-centered original remains the sine qua non of the genre.

For the...