The first official clip from The Last Exorcism has made it’s way online today via Empire. If that wasn’t enough to get your blood pumping, then there’s a brand spanking new poster as well.

The Last Exorcism has been directed by Daniel Stamm (A Necessary Death), with horror-gore extraordinaire Eli Roth acting as exec producer. The film stars Patrick Fabian, Ashley Bell, Louis Herthum, Iris Bahr, Tony Bentley and Caleb Landry Jones.

Synopsis: When he arrives on the rural Louisiana farm of Louis Sweetzer, the Reverend Cotton Marcus expects to perform just another routine “exorcism” on a disturbed religious fanatic. An earnest fundamentalist, Sweetzer has contacted the charismatic preacher as a last resort, certain his teenage daughter Nell is possessed by a demon who must be exorcized before their terrifying ordeal ends in unimaginable tragedy. Buckling under the weight of his conscience after years of parting desperate believers with their money, Cotton and his crew plan to film a confessionary documentary of this, his last exorcism. But upon arriving at the already blood drenched family farm, it is soon clear that nothing could have prepared him for the true evil he encounters there. Now, too late to turn back, Reverend Marcus’ own beliefs are shaken to the core when he and his crew must find a way to save Nell – and themselves – before it is too late.

The film has already been screened at a number of film festivals, including FanTasia 2010, where it was met with a series of positive reviews for critics and audience members.

As well as the new clip and poster, make sure you check out the recent trailer and first poster, as they cement The Last Exorcism as one of the most original-looking horror films of recent years.

You can have a look at the newest poster, and first official clip, below:

The Last Exorcism will be screened at the FrightFest 2010 over the August bank holiday weekend, with a full UK release to follow on September 3.

Thanks to Dread Central for the poster, and Empire for the official clip.