Rest in Peace: Author William Peter Blatty

William Peter Blatty, author of the famed horror novel "The Exorcist", died Thursday at the of age 89.

"William Peter Blatty, dear friend and brother who created The Exorcist passed away yesterday", the 1973 film's director William Friedkin tweeted Friday.

The novel was panned by critics but went on to sell 13 million copies, topping The New York Times bestseller list for 17 weeks, and is retrospectively considered to be one of the greatest horror novels of all time.

He wasn't gone for long, though, because the massive success ofThe Exorcist-Blatty's first foray into horror-led to him being contracted to write the screenplay for the film version.

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In his lifetime, he won both an Oscar and a Golden Globe for the adapted screenplay of his own work and the film itself won the Golden Globe for Best Picture.

Variety confirmed the death of the NY native and Air Force veteran who won an Oscar in 1973 for the adaptation of his own 1971 novel. She said that the cause of death was multiple myeloma, a form of blood cancer.

Blatty wrote the novel of the same name that inspired "The Exorcist", about two priests attempting to help an actress (Ellen Burstyn) whose 12-year-old daughter (Linda Blair) is possessed. More recently, Fox announced it would revive the story as a TV series, starring Geena Davis.

Blatty's non-Exorcist themed credits include writing 1969's western comedy The Great Bank Robbery, 1966's comedy What Did You Do in the War, Daddy? and 1965's John Goldfarb, Please Come Home!