Silent Witness - Season 18 (2015)

Whilst fibres under the nails of the latest victim provide a link the the St Jude's homeless hostel Lana is interviewed as a formality and states that Owen Hanmore was outside the tube station at the time of the first death and must thus be innocent. Clarissa, however, finds evidence of Lana's prints on the victim's phone and Lana and Hanmore are both increasingly under suspicion as they locate Lana's child and attempt to kidnap him. The child will provide a link to the murders whilst Nikki helps Luke to come to terms with his own past.

Little Lizzie Craddock goes missing after social worker Louise Dillon has unsuccessfully applied for a care order given her father Johnny's violence. At the same time suspected paedophile Dale Barge is murdered and pictures of Lizzie are found at his flat. Young Kevin Garvey leaves care but goes to stay with his grandparents, rather than inadequate mother Niamh and stepfather Daniel, whom he blames for himself and his sisters going into care. Then Daniel is found dead.

Johnny is arrested for Dale Barge's murder but Lizzie is still missing. Evidence suggests that Kevin was present at the car where his step-father was murdered but he seems unaware of the death when he asks his sisters to run away with him and receives some shocking news from them. Lizzie's story ends well but after Kevin's grandfather Sean Patrick is also killed a terrible family secret is exposed, leading to the solution of the murders.

A shootout at a City hotel leaves young Ukrainian nanny Sofia Teplov dead, along with an unknown hitman. The Russian oligarch target Maksim Bazhanov narrowly escapes.

A young woman working for the Doshi property moguls, Amy Greenwood, is found dead in Maksim Bazhanov's apartment, and Maksim is discovered to have been in a relationship with Yasmin Doshi.

Whilst cage-fighting Jack takes on young Dean Fallon, drug dealer and son of career criminal Terry Fallon. When policeman Sam Honeywell's corpse is discovered in his burnt out car Dean is the main suspect after Honeywell had arrested him but is released for lack of evidence. Sam's colleague Carl Parry is then arrested when it is made known that Carl's wife Kate was having an affair with the dead man. After Dean has fallen out with his friend Jason Simons over Dean's girlfriend Tess Hughes Tess finds drugs hidden in her father Stan's garage, which she takes to Jason. ...

Following Simons' death he is revealed to have been an undercover policeman infiltrating the Fallons' drug dealing empire. Tess questions her father and is shocked to learn that he is part of the gang before Stan gets a visit from Fallon's lawyer telling him to say nothing. There will be another death and a shoot-out before the killer is finally exposed.