Legion, by William Peter Blatty

Legion, by William Peter Blatty. 1983 first edition hardcover. 269 pages, very nice condition.

A young boy is found horribly murdered in a mock crucifixion. Is the murderer the elderly woman who witnessed the crime? A neurologist who can no longer bear the pain life inflicts on its victims? A psychiatrist with a macabre sense of humor and a guilty secret? A mysterious mental patient, locked in silent isolation? Lieutenant Kinderman follows a bewildering trail that links all these people, confronting a new enigma at every turn even as more murders surface. Why does each victim suffer the same dreadful mutilations? Why are two of the victims priests? Is there a connection between these crimes and another series of murders that took place 12 years ago - and supposedly ended with the death of the killer?

Legion is a horror novel by American writer William Peter Blatty, a sequel to The Exorcist. It was adapted for the film The Exorcist III in 1990. Like The Exorcist, it involves demonic possession. The book was the focus of a court case over its exclusion from The New York Times Best Seller list. Blatty based aspects of the Gemini Killer on the real life Zodiac Killer, who in a January 1974 letter to the San Francisco Chronicle had praised the original Exorcist film as "the best satirical comedy that I have ever seen."