Check out the the trailer for 6 Souls. It looks like to have a lot of the same style as most modern possession horror movies. The cast, however, is of higher caliber.
The Plot: After the death of her husband, Dr. Cara Harding's (Julianne Moore) faith in God has been shaken, but not her belief in science. In an attempt to open her up to accepting unexplainable psychiatric theories, her father introduces her to Adam, a patient with multiple personalities who takes on some of the physical characteristics of his other personalities. But, Cara quickly discovers that Adam's other personalities are murder victims and the more she finds out about him and his past, the closer she and her loved ones are to becoming murder victims themselves.
6 Souls is directed by Mans Marlind and Bjorn Stein. It features the talents of Julianne Moore (Carrie 2013) and Jonathan Rhys Meyers (The Tudors).
6 Souls arrives in theaters April 5th, 2013