The Last Exorcism, coming out August 27, is the rarest of beasts: a Satanic horror film that feels fresh and really horrifying. Check out a couple of clips that showcase this film's nasty unpredictability.

Reverend Cotton Marcus and his documentary crew arrive in the middle of nowhere, searching for the farmhouse where the supposedly possessed girl is. They stop and ask someone for directions:

Later on, Rev. Marcus gets an unexpected visitor at his motel room late at night:

And here's a TV spot that shows off more of the chaos that descends on poor Rev. Marcus: