Meet DI HILLARY GREENE, a policewoman struggling to save her career and catch criminals. Mattie Jones is found brutally stabbed to death in her palatial home. Hillary Greene is called in to investigate the murder of this wealthy woman. Who wanted her dead and why? Hillary discovers that Mattie's snobby attitude had made her many enemies. Mattie was also going through a messy divorce and had a secret lover. Meanwhile, in a terrifying turn of events, police officers are being gunned down outside their stations. A sniper is on the loose. Who will come under attack next? Can Hillary cope with the enemies within, a complex case, and the whole force under attack?