19-year-old Arne Cheyenne Johnson was, by most accounts, a good kid. He had a steady job, a girlfriend, and a future. Until, that is, he murdered his landlord, Alan Bono. What would have been an open-and-shut case became stranger and stranger as more details emerged. Arne, it appeared, had been attending exorcisms conducted by the self-styled demonologists and paranormal investigators Ed and Lorraine Warren. Arne had asked demons to enter him -- and, eventually, the Warrens believe, they did.