Silent Witness

When an RAF helicopter crashes onto a detention centre for asylum seekers, Harry and Nikki are first on the scene.

Obsessed with proving the pilot's innocence, Harry suspects the MOD may be covering up the true cause of the helicopter crash.

The discovery of a mutilated child's body in a river raises the question of ritual killing and brings Leo face to face with a ghost from his past.

Leo refuses to back down in his search for the killers of the young boy despite threats and increasing racial tension.

A post mortem on a child who died during surgery prompts Nikki to investigate a leading paediatrician with an unusually high mortality rate.

With Nikki out of action and a theatre nurse missing, Harry and Leo dig deeper into the hospital deaths.

Nikki is forced to revisit an emotive and controversial case from her past when a notorious female murderer is murdered.

Nikki's professional reputation is at stake as doubts about the Paula Colebrook case continue.

Nikki clashes with DCI Mays over the guilt of a gypsy he suspects of a double murder while Harry takes on an insurance company.

Nikki and Mays can’t agree while the investigation exposes a significant police cover up.