William Peter Blatty Novel

William Peter Blatty's novel and later screenplay for the 1973 film about a demonic possession became a phenomenon and stirred fierce public debate about the occult. The Bethesda, Md., native has died at age 89.

William Peter Blatty's novel and later screenplay for the 1973 film about a demonic possession became a phenomenon and stirred fierce public debate about the occult. The Bethesda, Md., native has died at age 89.