Sony Screen Gems released their poster for their upcoming film The Exorcism of Emily Rose, which is based on a true story. Inside you can take a look at poster, which is extremely creepy and yet truly stunning. The Scott Derrickson directed pic hits theaters September 9th. In an extremely rare decision, the Catholic Church officially recognized the demonic possession of a 19-year-old college freshman. Told in terrifying flashbacks, The Exorcism of Emily Rose chronicles the haunting trial of the priest accused of negligence resulting in the death of the young girl believed to be possessed. Inspired by true events, the film stars Laura Linney as the lawyer defending the priest (Tom Wilkinson) who performed the controversial exorcism.