This film may aspire to be a highbrow horror movie, but deep down, “The Exorcism of Emily Rose” is more like a two-hour, sweeps-period “Law & Order” episode, complete with special guest stars and a shocking story that’s been ripped from the headlines. Director Scott Derrickson, who co-wrote the script with Paul Harris Boardman (which was inspired by true events), is all business in telling the story of a Catholic priest on trial for negligent homicide following the death of a satanically possessed 19-year-old on whom he’d performed an exorcism. Sounds juicy, gory, potentially cheesy, right? Nope. Just a cavalcade of Oscar nominees (Tom Wilkinson, Laura Linney, Shohreh Aghdashloo) going about their work seriously, and a few solid scares. Rated: PG-13 . Rating: 2 out of 4 stars. – Christy Lemire, AP movie critic