What we are dealing with in The Last Exorcism is a preacher who doesn’t believe in what he is preaching. He does exorcists, but does it as a hoax and makes it an act, similar to a Benny Hinn. The preacher hires a documentary crew to film him so that he can show the world just how fake it is. Of course, it wouldn’t be a horror film without things going wrong.
The documentary style to this film adds to the scare in scenes, that I found to be quite frightening. The film feels different than most scares in other horror films and leaves a lot to the imagination. More often than not, we see the aftermath of something and not the actual act. It’s filmed in a style that is a lot more appealing than most mockumentaries and feels more realistic.