Series 18

Jan 6, 2015 · 1 hr

Nikki and Jack strive to track down a sniper at large in London and stem a public crisis.

Jan 7, 2015 · 1 hr

Nikki and Jack investigate links between the victims to close the net on the killer.

Jan 12, 2015 · 1 hr

Nikki and Jack investigate a man killed by a train on the London underground.

Jan 13, 2015 · 1 hr

Nikki helps high-flying DI Luke Nelson unearth painful childhood memories.

Jan 19, 2015 · 1 hr

A suspected paedophile is found murdered in a children's playground.

Jan 20, 2015 · 1 hr

Nikki, Jack and Thomas focus in on Lizzie's movements on the night of Barge's murder.

Jan 26, 2015 · 1 hr

The nanny of a Russian oligarch is killed in a botched assassination attempt.

Jan 27, 2015 · 1 hr

A young woman working for the Doshis is found dead in Maksim's apartment.

Feb 2, 2015 · 1 hr

The Lyell team are under pressure to catch the killer of an admired Essex police officer.

Feb 3, 2015 · 1 hr

When the body of local criminal Jason Simons is found, the course of the case is changed.