1Sniper's Nest (1)
Jan 6, 201560 min
Nikki and Jack strive to track down a sniper at large in London and stem a public crisis.
2Sniper's Nest (2)
Jan 7, 201560 min
Nikki and Jack investigate links between the victims to close the net on the killer.
3Falling Angels (1)
Jan 12, 201560 min
Nikki and Jack investigate a man killed by a train on the London underground.
4Falling Angels (2)
Jan 13, 201560 min
Nikki helps high-flying DI Luke Nelson unearth painful childhood memories.
5Protection (1)
Jan 19, 201560 min
A suspected paedophile is found murdered in a children's playground.
6Protection (2)
Jan 20, 201560 min
Nikki, Jack and Thomas focus in on Lizzie's movements on the night of Barge's murder.
7Squaring the Circle (1)
Jan 26, 201560 min
The nanny of a Russian oligarch is killed in a botched assassination attempt.
8Squaring the Circle (2)
Jan 27, 201560 min
A young woman working for the Doshis is found dead in Maksim's apartment.
9One of Our Own (1)
Feb 2, 201560 min
The Lyell team are under pressure to catch the killer of an admired Essex police officer.
10One of Our Own (2)
Feb 3, 201560 min
When the body of local criminal Jason Simons is found, the course of the case is changed.