E1 · Sniper's Nest (1)
Nikki and Jack strive to track down a sniper at large in London and stem a public crisis.
E2 · Sniper's Nest (2)
Nikki and Jack investigate links between the victims to close the net on the killer.
E3 · Falling Angels (1)
Nikki and Jack investigate a man killed by a train on the London underground.
E4 · Falling Angels (2)
Nikki helps high-flying DI Luke Nelson unearth painful childhood memories.
E5 · Protection (1)
A suspected paedophile is found murdered in a children's playground.
E6 · Protection (2)
Nikki, Jack and Thomas focus in on Lizzie's movements on the night of Barge's murder.
E7 · Squaring the Circle (1)
The nanny of a Russian oligarch is killed in a botched assassination attempt.
E8 · Squaring the Circle (2)
A young woman working for the Doshis is found dead in Maksim's apartment.
E9 · One of Our Own (1)
The Lyell team are under pressure to catch the killer of an admired Essex police officer.
E10 · One of Our Own (2)
When the body of local criminal Jason Simons is found, the course of the case is changed.
