Overview: DI Deering and her team must crack the case of a twisted serial killer - by whatever unconventional means possible.
Overview: After Deering and her team lose the serial killer case, the cops see a chance to redeem themselves by investigating a dangerous new street drug. No animals were harmed in the making of this episode.
Overview: The serial killer is showing no signs of slowing down, while local racial tensions are also running high when an Asian woman is killed in a suspected racist attack.
Overview: The Friday Street team uncover a scam encouraging people in debt to sell their kidneys, while the search for another girl abducted by the serial killer leads to a big breakthrough.
Overview: The police set up a trap for the prime suspect in the serial killer case, but their plans could be derailed entirely after a notorious child murderer's new identity is leaked on the internet.
Overview: Deering leads a manhunt through Manchester as the net closes in on the serial killer. Joy and Spike discover an unsettling slavery case after a brutal attack on a young homeless man.
Overview: The fatal shooting of a respected surgeon leads the team to an unlikely suspect. Meanwhile, Dinah and Deering make disturbing new discoveries in the serial killer case, fearing it might not be over.
Overview: In the final episode, Dinah clashes with Deering, setting off an irreversible chain of events, and an attempt to save the lives of a mother and baby goes disastrously wrong.