The story tells the trial not the actual exorcism. Details of the possession and the ritual of the exorcism is described in flashbacks. It's courtroom drama made un-boring.

And to judge this movie isn't really about if you believe the possession or not, frankly, I don't, and I'm a Christian. The way the movie explains it is because she is hyper-sensitive and is prone to demon possession, but that doesn't matter...

What do you guys think of the actual movie?