I went to see "The Devil Inside" today. Put simply, a normal woman has a breakdown (or becomes possessed) and kills the 3 people sent to exorcise her.

20yrs later her daughter flies to Rome to meet her Mum, try and understand how exorcisms work, and what went down that night. After she observes an exorcisms, things start getting weird for her, the priests involved, and the cameraman.

It wasn't bad, it's just I don't think the film was as clever as the writer and directors thought it'd be.