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William Peter Blatty
The Exorcist
William Peter Blatty's Exorcist series explores the nature of good and evil through supernatural horror. These books examine faith, doubt, and the fight against demonic possession, creating a chilling experience for readers.
The intended reading order for the series is The Exorcist, followed by Legion. While A Shot in the Arm! is sometimes associated with the series, it is a standalone work by William Peter Blatty and not part of the narrative arc of The Exorcist and Legion.
The first book, The Exorcist, was famously adapted into a highly influential film of the same name. The second book, Legion, was also adapted into a film, initially titled Exorcist III.