The Conjuring: The Devil Made Me Do It is the third main installment in The Conjuring series, inspired by real-life cases of paranormal investigators Ed and Lorraine Warren. The film begins with the dramatic exorcism of a young boy, David Glatzel, which spirals out of control. In a desperate attempt to save the child, Arne Johnson, David’s sister’s boyfriend, invites the demonic entity to enter his body instead.

Not long after, Arne murders his landlord, Bruno Sauls, in a violent outburst. Arrested for the crime, Arne claims he was possessed at the time of the killing. This leads to one of the most sensational legal cases in American history—the first time in the United States that demonic possession was used as a defense in court.
Determined to uncover the truth and prove Arne’s innocence, Ed and Lorraine Warren embark on a chilling investigation. Their search leads them beyond the ordinary haunting into a dark world of occult practices, curses, and satanic rituals. Lorraine, gifted with psychic abilities, becomes the key to unraveling the mystery, but she must confront terrifying visions that test her strength and faith.
As the Warrens piece together the connections between the curse, previous murders, and the forces manipulating events, they realize they are dealing with a powerful occultist who has summoned the demon. Time is running out as Arne’s trial approaches, and the Warrens must confront evil directly to break the curse and save him.
Blending supernatural horror with courtroom drama, the film delivers both psychological tension and frightening encounters. It explores themes of faith, love, and the resilience of the human spirit in the face of overwhelming darkness.