The Reverend Cotton Marcus (Patrick Fabian) lives in Baton Rouge, Louisiana, with his wife and son. Marcus is accustomed to performing exorcisms on "possessed" individuals, but his faith wanes as he reads of an autistic child being killed during an exorcism, reminding him of his own disabled son. He comes to realize that he attributes his son's healing to science, and not to Jesus Christ. He agrees to take part in a documentary designed to expose exorcism as a fraud, working with a film crew consisting of producer/director Iris Reisen (Iris Ginez) and cameraman Daniel Moskowitz (Adam Grimes).
