Silent Witness

Emilia Fox stars in a thrilling feature-length episode. When three people are shot in a petrol station the team faces a sniper at large in London. S18 Ep1

A feature-length episode of the forensic crime drama. Nikki and Jack investigate a series of murders linked to the London Underground. S18 Ep2

A disturbing forensics mystery for Emilia Fox and team. When the body of a suspected paedophile is found in a playground, the death is linked to a missing child. S18 Ep3

Emilia Fox stars in a feature-length forensics drama. Nikki and Jack work with young DI Sarah Parks to ascertain the identity of a dead hitman. S18 Ep4

Sniper's Nest, Part 1. Nikki and Jack strive to track down a sniper at large in London and stem a public crisis. Contains some upsetting scenes.

Sniper's Nest, Part 2. Nikki and Jack investigate links between the victims to close the net on the killer. Contains some upsetting scenes.

Falling Angels, Part 1. Nikki and Jack investigate a man killed by a train on the London underground. Contains some upsetting scenes.

Falling Angels, Part 2. Nikki helps high-flying DI Luke Nelson unearth painful childhood memories. Contains disturbing scenes.

Protection, Part 1. A suspected paedophile is found murdered in a children's playground. Contains upsetting scenes.

Protection, Part 2. Nikki, Jack and Thomas focus in on Lizzie's movements on the night of Barge's murder. Contains upsetting scenes.

Squaring the Circle, Part 1. The nanny of a Russian oligarch is killed in a botched assassination attempt. Some upsetting scenes.

Squaring the Circle, Part 2. A young woman working for the Doshis is found dead in Maksim's apartment. Contains some upsetting scenes.

One of Our Own, Part 1. The Lyell team are under pressure to catch the killer of an admired Essex police officer. Contains some upsetting scenes.

One of Our Own, Part 2. When the body of local criminal Jason Simons is found, the course of the case is changed. Contains disturbing scenes.