Crime thriller series. DS Sarah Collins joins Homicide Command and is tasked with a cold case, and PC Lizzie Adams's willingness to do things by the book is tested by a call-out.

Episode 1 of 4 

Drama

Crime

DS Sarah Collins joins Homicide Command and finds her new team in the thick of it as they attempt to track down the culprit behind a chicken shop shooting. At the helm of the investigation is DS Steve Bradshaw, but Sarah's kept away from the action as her new boss, DCI Jim Fedden, tasks her with a cold case.

The Tower

Series 2

DS Sarah Collins joins Homicide Command as they track down the culprit behind a shooting.

Crime thriller series. Sarah and Lizzie find themselves working the same murder with their mutual distrust still apparent, but they must cooperate if they are to find a lost child.

Episode 2 of 4 

Crime thriller series. The team are left reeling when Brannon's YouTube video goes viral, and Sarah and Elaine make a grim discovery that exposes a vile predator and a vital clue.

Episode 3 of 4 

Crime thriller series. When Steve alerts Sarah to the danger awaiting Lizzie at her home, Sarah races to her aid and they face the desperate Brannon together in a grisly climax.