Summary:

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Though he is filled with doubt about the subject, seminary student Michael Kovak (Colin O’Donoghue) finds he must attend a Vatican school of exorcism. Believing possession to be the work of a troubled mind rather than actual demons, hel urges his superiors to look for answers in psychiatry. Then Michael becomes the apprentice of Father Lucas (Anthony Hopkins), a veteran exorcist, and encounters a terrifying force that causes him to question everything he believes.
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