Investigating the killing of a prisoner during a riot inside a state penitentiary, GBI Agent Will Trent is told by an inmate who claims that he is innocent of a brutal attack of which he has always been the prime suspect. The man insists that he was framed by a corrupt law enforcement team led by Jeffrey Tolliver and that the real culprit is still out there—a serial killer who has systematically been preying on women across the state for years.