One night when we is out, side waiting for Chris to come home to hear he has died falling out the window. Although this is assumed to have been an accident, given luck history of heavy drinking, his death is investigated by Lieutenant people who interviews Chris, as well as priest and psychiatrist Father who has lost faith in God after his frail mother died The doctors, thinking that Regan only believes she is possessed, recommend an exorcism be performed. Chris arranges a meeting with Karras. After recording us speaking backwards and witnessing the etching of the words "Help Me" on her stomach, Karras is convinced Regan is possessed. Believing her soul is in danger, he decides to perform an exorcism. The experienced Merrin is selected to
