The inmates of the Darden State Hospital for Criminal Justice are among the most dangerous psychopathic killers in the country. Now, while fires burn out of control in Southern California, authorities face the overwhelming task of relocating hundreds of these patients before the raging inferno descends. But in the frenzy, two of the murderers remain behind, unaccounted for. . . . "Bloody Mary" Chilmark and her son, Doc, discover the entrance to the underground passageways beneath Darden State in a desperate bid to escape. Instead they find the Night Cagea special room where brutal experiments were once carried out. Its up to Trey Campbell and Officer Jane Laymon to hunt for the killers in the dark underworld maze.