Rachel is a dedicated registered nurse working in the mile high city of Denver, Colorado, saving lives and helping others during times of medical crisis. But when a frightening medical diagnosis of her own throws her life into chaos, she is faced with a moral dilemma rocking both herself, and the city, to their very core. Detective Brian O'Reilly battles with his own demons, when a suspected child rapist and killer is set free to roam the city streets after valuable evidence is thrown out. Detective O'Reilly and his partner must track down more evidence to lock the killer back up before he victimizes another innocent child. But when an unsuspecting vigilante brings the city to its knees, the detectives are torn between the two highly publicized cases. Do they pursue the murdering child rapist... or the vigilante?