Legion
The sequel to The Exorcist.
A young boy, a deaf-mute, is found horribly murdered in a mock crucifixion. The kindly, aging detective assigned to the case sees it not only as a crime – one that calls for all his skill and intuition as an investigator – but as part of a larger and more baffling mystery; whether or not a good god can exist if He tolerates such monstrous evil. 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?
As Lieutenant Kinderman follows a bewildering trail that links all these people, he confronts a new enigma at every turn. Why does each victim suffer the same dreadful mutilations? Why are two victims priests? Is there a connection between these crimes and another series of murders that took place twelve years ago – and supposedly ended with the death of the killer?
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William Peter Blatty
William Peter Blatty (1928-2017) was an American writer and filmmaker best known for his 1971 novel The Exorcist and for the Academy Award-winning screenplay of its film adaptation. He also wrote and directed the sequel The Exorcist III. Some of his other notable works are the novels Elsewhere (2009), Dimiter (2010) and Crazy (2010).
The Exorcist
The Exorcist consists of two books. The current recommended reading order for the series is provided below.

