It stars Patrick Fabian, Ashley Bell, Iris Bahr, Caleb Landry Jones, and Louis Herthum.

Filmmakers Iris and Daniel document Cotton Marcus, a reverend living in Baton Rouge, Louisiana, who seeks to delegitimize exorcisms.

Marcus, who lost his faith after the birth of his disabled son, is accustomed to performing fake exorcisms on individuals who believe they are possessed.

Conducting the phony exorcism, he convinces her family that he has driven out the demon and leaves, believing he has cured her of a mental state that was misdiagnosed as possession.

Offended at Marcus's insistence that a demon is not involved, he demands that the crew leave and alludes to intending to kill Nell.

Members of the cast were also introduced on stage, Patrick Fabian, Ashley Bell, Louis Herthum, Caleb Landry Jones, Iris Bahr, and Tony Bentley.

[27] In the UK, a poster image for the film which showed a young girl, wearing a blood-spattered dress, bent over backwards below a crucifix, received dozens of complaints that it was "offensive", "distressing", and "unsuitable for public viewing".

The Advertising Standards Agency decided that the image could not be used on a publicly visible poster since that was an untargeted medium but was acceptable on the back cover of Cineworld magazine.

[28][29] The Last Exorcism used Chatroulette as the medium of its viral campaign involving a girl who pretends to unbutton her top seductively, then stops and turns into a monster.

The site's consensus being "It doesn't fully deliver on the chilly promise of its Blair Witch-style premise, but The Last Exorcism offers a surprising number of clever thrills.

"[36] On the other hand, Joe Neumaier of New York Daily News gave the film 1 out of 5 stars and wrote, "Some of Bell's contortionist tricks aren't nearly as frightening as the best moments in Paranormal Activity.

[39] The film was directed by Ed Gass-Donnelly,[38] with Damien Chazelle (Guy and Madeline on a Park Bench) providing the screenplay.