2015 • 10 Episodes
January 6, 2015
Nikki and Jack strive to track down a sniper at large in London and stem a public crisis.
January 7, 2015
Nikki and Jack investigate links between the victims to close the net on the killer.
January 12, 2015
Nikki and Jack investigate a man killed by a train on the London underground.
January 13, 2015
Nikki helps high-flying DI Luke Nelson unearth painful childhood memories.
January 19, 2015
A suspected paedophile is found murdered in a children's playground.
January 20, 2015
Nikki, Jack and Thomas focus in on Lizzie's movements on the night of Barge's murder.
January 26, 2015
The nanny of a Russian oligarch is killed in a botched assassination attempt.
January 27, 2015
A young woman working for the Doshis is found dead in Maksim's apartment.
February 2, 2015
The Lyell team are under pressure to catch the killer of an admired Essex police officer.
February 3, 2015
When the body of local criminal Jason Simons is found, the course of the case is changed.