When supernatural killings start up at the prison, Deacon Kaylor calls Sam and Dean Winchester to come and investigate. The brothers get themselves arrested and become inmates of the prison. The brothers soon discover that the prison is haunted by a ghost, initially suspected to be one of the inmates, but later proven to be a nurse, who was killed during a prison riot. With the help of Deacon Kaylor and Mara Daniels, the brothers manage to salt and burn the nurse's remains and end her rain of terror.