The show follows a team of cops in the heart of crime. This team of cops are tough but big-hearted who go above and beyond to bring down criminals. Set on one of the worst parts of town there is a demoralizing list of crimes: drug labs, arsonists, neo-Nazis and notorious murderers. These are just a days work for this team. However when a serial killer emerges it leaves the team and DI Vivienne Deering played by Joanna Scanlan reeling. Joined by her right-hand women DC Dinah Kowlaska (Elanine Cassidy) and DS Joy Freers (Alexandra Roach) they must crack the case by whatever means possible.