Please answer the following question: Build a movie plot around this: What does Nell kill? a cat
A:
The Reverend Cotton Marcus (Patrick Fabian) lives in Baton Rouge, Louisiana, with his wife (Shanna Forrestall) and son (Justin Shafer). Marcus is accustomed to performing exorcisms on "possessed" individuals, but his faith has waned after reading of an autistic child being killed during an exorcism, reminding him of his own disabled son. He comes to realize that he attributes the healing of his son 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 Bahr) and cameraman Daniel Moskowitz (Adam Grimes). At random, he chooses a plea letter from an individual seeking an exorcism leading him to the farmhouse of Louis Sweetzer (Louis Herthum), a man who claims to have a possessed daughter named Nell (Ashley Bell). Prior to the exorcism, Marcus plants hidden speakers and electronic props so he can bamboozle the family into believing he is driving out a demon. After the ritual, Marcus and his film crew leave believing they have cured her of a mental state that was misdiagnosed as a possession by a powerful demon Abalam.That night, Nell mysteriously appears in Marcus' hotel room. The team tries to contact Louis to get permission to film her, to no avail. Wishing to prove his point, Marcus admits Nell to the hospital for testing, hoping to receive a medical or psychological diagnosis proving demonic possession is not the cause of her illness. The doctor concludes that Nell is in perfect physical condition. In the morning, her father takes her home and chains her in her room for slicing her brother Caleb (Caleb Landry Jones) in the face. While Louis takes Caleb to the hospital, Marcus and the camera crew further investigate Nell and the home. They find Nell and release her. That night there is a disturbance in the house, and Marcus and the crew hear the cries of a baby. They find Nell standing in a hallway. As they try to confront her, she heads into a bathroom, where she is found...