Six months after his disappearance, Garth turns up injured in a hospital. Sam and Dean arrive separately to investigate and soon discover that their friend has undergone a startling transformation……

An angry resident of The Glades who calls himself “The Savior” embarks on a kidnapping and killing spree to punish those he believes have wronged the residents of his neighborhood….

Sam and Dean investigate an abandoned sanitarium and discover that when the hospital was open, the patients held a revolt against the cruel and unusual punishments inflicted by the head…