
Following the dramatic climax of season one, rookie PC Lizzie Adama returns to her London police station, where she finds herself fighting to protect a mother and daughter in peril. DS Sarah Collins, having transferred to Homicide Command, reopens a cold case involving a missing schoolgirl that leads her to cross paths with Lizzie again. DI Kieran Shaw wants to recruit DS Steve Bradshaw for a specialist task force targeting a major organized crime figure but must convince Steve he can be trusted.

Sarah searches for a vanished teenager; Lizzie investigates a case of domestic violence.

As the manhunt closes in on Brannon, Sarah realizes where Tania's body might be buried.

The Brannon manhunt reaches its climax, and Sarah faces Tania's killer.