Lionsgate has released the first official trailer for its Eli Roth produced supernatural-thriller The Last Exorcism, originally titled Cotton. Directed by Daniel Stamm (A Necessary Death), the film employs shaky-cam techniques to capture an evangelical minister’s last exorcism in documentary fashion (think Paranormal Activity meets The Exorcist).

The film’s synopsis reads:

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 Last Exorcism stars Ashley Bell, Patrick Fabian (Pig), Iris Bahr (The Poughkeepsie Tapes), Jamie Alyson Caudle (Jonah Hex), Louis Herthum (Mutants), and Tony Bentley (The Bad Lieutenant: Port of Call New Orleans)

It arrives in theaters on Aug. 27.