Aired: 1/6/2015
Nikki and Jack strive to track down a sniper at large in London and stem a public crisis.
Aired: 1/7/2015
Nikki and Jack investigate links between the victims to close the net on the killer.
Aired: 1/12/2015
Nikki and Jack investigate a man killed by a train on the London underground.
Aired: 1/13/2015
Nikki helps high-flying DI Luke Nelson unearth painful childhood memories.
Aired: 1/19/2015
A suspected paedophile is found murdered in a children's playground.
Aired: 1/20/2015
Nikki, Jack and Thomas focus in on Lizzie's movements on the night of Barge's murder.
Aired: 1/26/2015
The nanny of a Russian oligarch is killed in a botched assassination attempt.
Aired: 1/27/2015
A young woman working for the Doshis is found dead in Maksim's apartment.
Aired: 2/2/2015
The Lyell team are under pressure to catch the killer of an admired Essex police officer.
Aired: 2/3/2015
When the body of local criminal Jason Simons is found, the course of the case is changed.
