Silent Witness

When his wife and teenaged daughter are involved in a hit and run car crash, Leo begins a painful journey back to his native Sheffield. Leo struggles to accept the facts and soon finds himself at odds with the Sheffield team investigating the incident. Back in London Nikki investigates the murders of two unidentified women and she too finds the police unco-operative.

A submachine gun attack on a group of teenagers outside a London nightclub brings the team into the unfamiliar urban world of street gangs on the decaying inner-city estates. Meanwhile Nikki uncovers the decomposed body of a drug addict and finds herself in conflict with a detective who believes that such deaths are so common they are hardly worth investigating.

When her grandmother passes away, Nikki begins to have doubts about her profession. Meanwhile, the team investigates a series of brutal and apparently entirely motiveless murders - and a killer who seemingly needs to look his victims in the face as they die. Harry investigates the death of a woman who appears to have drowned in three inches of water - with no obvious suspect to apportion blame.

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.

Harry is called to investigate the death of Dawn Pivcevic, who seemingly drowned in a paddling pool containing three inches of water.

Harry discovers that the woman who drowned was pregnant, and the team gradually begins to collate evidence from the kidnap case. As Nikki struggles to deal with her own feelings about faith and death, her search brings her face to face with the darkest of killers.

When members of a syndicate owning a prize race horse are killed in a helicopter crash, Leo and Harry investigate a complex betting scam.

Nikki's investigation takes an unexpected turn when she reaches January House Care Centre and finds that Morrie has tried to commit suicide.