William Gaminara

Whilst Nikki and Jack close the net on Brian Blackburn's troubled son for murdering his co-worker at the eco-housing project, Leo finally finds someone willing to confirm his fear about the mysterious local health hazard. But when his would-be-informant is found murdered, Leo is convinced he was the victim of a government conspiracy to conceal the truth.

The team go to Afghanistan at the request of a British Army Corporal who is trying to identify the remains of his brother. An anxious Leo, Nikki and Jack head for the war-torn country in search of the truth about the soldier's mysterious disappearance.

As the basement women case highlights two cooperating killers, Nikki, Jack and DI Reed realize one victim was killed by a controlled sedative, stolen from a high-tech vaccine research lab. And suspicion falls on Lucas Ballinger, a scientist who works there.

When John Briggs, a wealthy business owner, is found dead, Nikki works with forensic scientist Jack Hodgson to convince DI Gold it was murder. Leo, warned by the Home Office to rethink the Lyell Centre's operations, helps Nikki prove Briggs died from a mysterious allergic reaction. However, as suited sharks circle to buy Briggs' ailing company, Jack believes someone exploited this allergy to kill.

When the team finally unearth the shocking truth about Imogen's murder, it exposes a web of lies and deceit, which puts those connected to the case in imminent danger from the sinister Alan Lane.

Memories of his own daughter's death are stirred when Leo is called in to investigate the suicide of a young girl. Confusion arises when the case is linked to that of a car salesman. Meanwhile, Nikki investigates the death of an elderly woman.

A paranoid schizophrenic goes on a violent frenzy in a busy high street and two people are left dead. Then when a young man from the same care home commits suicide, Nikki becomes convinced that there is a connection. Meanwhile Harry tries to find the truth about a teenage suicide's death for her devastated mother, and Leo investigates the murder of a bank manager.

The death of a second Hasidic boy, Chaim, convinces Harry they are looking for a Jewish killer, but without concrete evidence the police are reluctant to upset an already fragile relationship with the community. But when Binyomin appears to take the law into his own hands, Harry makes a shocking discovery that threatens to strain relations even further.

When the half-naked body of a 12-year-old is discovered floating in a drainage ditch near his school, the team is called in, bringing Nikki back in contact with one of her former teachers, Noel Hopkins, now headmaster. During Harry's preliminary examination they find clear signs of abuse, and when the police discover the victim was last seen with another boy, Liam, who has also gone missing, they fear he may have been abducted.

Nikki visits the only key eyewitness, Isra, the teenage sister of one of the suspects who insists her brother is innocent. Nikki is appalled by the harshness of her treatment, and the team begin to seriously suspect that the truth is being covered up. Meanwhile, Rhys is on the run, and Harry is shocked when he discovers the identity of the unknown victim.