Themes

• Battle between faith and evil

• Crisis of religious belief

• Psychological and physical transformation

• Mother-daughter relationship under duress

• Science versus supernatural explanations

• Sacrifice and redemption

• Loss of innocence

Setting

Set in the early 1970s, The Exorcist unfolds primarily in Georgetown, a historic neighborhood in Washington, D.C. This urban setting provides a stark contrast to the supernatural events that occur, with the iconic Georgetown University campus serving as a backdrop to the unfolding horror.

The story's main action takes place in a rented house where actress Chris MacNeil and her daughter Regan are staying during a film shoot. This domestic setting becomes increasingly claustrophobic as Regan's possession intensifies, transforming the once-ordinary home into a battleground between good and evil. Beyond Georgetown, the novel briefly takes readers to northern Iraq, where Father Merrin makes an ominous archaeological discovery. This Middle Eastern locale adds a layer of ancient mysticism to the story, hinting at the timeless nature of the demonic forces at play. 

Characters

• Regan MacNeil: The 11-year-old daughter of actress Chris MacNeil who becomes possessed by a demon. Initially a sweet child, Regan undergoes horrifying physical and psychological changes as the possession progresses. Her ordeal forms the central conflict of the novel, as various characters attempt to diagnose and treat her condition.

• Chris MacNeil: Regan's mother, a famous actress filming a movie in Georgetown. As an atheist, Chris initially seeks medical and psychiatric help for Regan before reluctantly turning to the Catholic Church. Her desperation to save her daughter drives much of the plot's momentum.

• Father Damien Karras: A Jesuit priest and psychiatrist struggling with a crisis of faith. Karras is initially skeptical of Regan's possession but eventually becomes convinced and assists in her exorcism. His internal conflict between faith and reason is a major theme of the novel.

• Father Lankester Merrin: An elderly Jesuit priest and experienced exorcist who is called in to perform Regan's exorcism. Merrin's archaeological work in Iraq at the beginning of the novel foreshadows the demonic conflict to come.

• Detective Kinderman: A police detective investigating strange occurrences connected to Regan's possession. His interactions with Father Karras provide additional perspective on the events unfolding.

• Sharon Spencer: Chris MacNeil's personal assistant who helps care for Regan. She witnesses some of Regan's disturbing behavior firsthand.

• Burke Dennings: The director of the film Chris is working on. His mysterious death becomes part of the investigation surrounding Regan's condition.

• Karl and Willie Engstrom: The MacNeils' household staff. They play minor roles in observing and reacting to the strange events in the house.

Quick facts

• The novel was inspired by a real-life exorcism case from 1949 that Blatty heard about while a student at Georgetown University.

• Blatty wrote the book in just 10 months, often working 16-hour days while taking stimulants.

• The character of Father Merrin was partially based on British archaeologist Gerald Lankester Harding.

• Aspects of the Chris MacNeil character may have been inspired by Blatty's former neighbor, actress Shirley MacLaine.

• The novel spent 57 weeks on the New York Times bestseller list, including 17 weeks at #1.

• Blatty also wrote the screenplay for the 1973 film adaptation, which won him an Academy Award.

• For the 40th anniversary edition in 2011, Blatty made some revisions and added a new character and scene.

• The book has been translated into many languages, including a Bengali version by novelist Humayun Ahmed.

• A stage adaptation premiered in 2012 at the Geffen Playhouse in Los Angeles.

• Blatty originally envisioned the story taking place largely in a courtroom before it evolved during the writing process.

About the Author

William Peter Blatty, born in 1928 in New York City, was an acclaimed American writer and filmmaker best known for his novel The Exorcist. The son of Lebanese immigrants, Blatty overcame a childhood marked by poverty and frequent evictions to earn degrees from Georgetown University and George Washington University. His early career included stints as a vacuum cleaner salesman, beer truck driver, and United States Air Force psychological warfare officer.

Blatty's breakthrough came in 1971 with the publication of The Exorcist, a horror novel that became a massive bestseller and cultural phenomenon. He adapted the book into an Academy Award-winning screenplay for the 1973 film version, which is widely regarded as one of the greatest horror movies ever made. The success of The Exorcist allowed Blatty to focus on writing and filmmaking full-time, though he had previously penned several comic novels and Hollywood screenplays.

In addition to The Exorcist, Blatty wrote and directed other notable works including The Ninth Configuration (1980) and The Exorcist III (1990). His later novels included Elsewhere (2009), Dimiter (2010), and Crazy (2010). Throughout his career, Blatty's work often explored themes of faith, good versus evil, and the supernatural, influenced by his devout Catholic upbringing.

Blatty was married four times and had seven children. A lifelong Catholic, he remained committed to his faith and even filed a canon law petition against his alma mater Georgetown University in 2012, claiming it had strayed from Catholic teachings. William Peter Blatty passed away in 2017 at the age of 89, leaving behind a legacy as one of the most influential horror writers of the 20th century.