Author William Peter Blatty, who wrote the best-selling horror novel, "The Exorcist," has died at the age of 89.
Blatty died Thursday, according to William Friedkin, who directed the film adaptation of "The Exorcist."
William Peter Blatty, dear friend and brother who created The Exorcist passed away yesterday
— William Friedkin (@WilliamFriedkin) January 13, 2017
RIP William Peter Blatty, who wrote the great horror novel of our time. So long, Old Bill.
— Stephen King (@StephenKing) January 13, 2017
