Detective Constable Janet Scott is subtle and reliable, a diplomatic thinker with a wry sense of humor. She's put in the time and seen it all, but has no desire for the boss's job--she loves her own too much. Rachel Bailey couldn't be more different--she's energetic, impulsive, and ambitious, and has just been transferred to the Manchester murder squad. Their commander thinks Rachel's intuition could make her a great cop, but has reservations about her shoot-first-think-later approach, so she partners her with Janet. At first, the match seems to have been made somewhere considerably lower than heaven, but when a teenage girl is found brutally murdered, stabbed to death in her squalid flat on a North Manchester housing estate, both detectives realize they must work together to stop a vicious killer. But the case quickly becomes more complicated than it seems, fraught with dangers neither woman could see coming.