Silent Witness

- Season 23

(2020)

A private jet crashes into woodland outside London. Among the passengers is a former U.S. Ambassador. Thomas investigates the apparent suicide of a successful businessman, finding unexpected connections to the plane crash.

With an explosion or engine failure ruled out of causing the crash, suspicion falls on the Deadhead - a non-flying pilot hitching a ride when his intended flight was cancelled. Then a connection is made to a sinister online forum.

When the body of a teenager is found in a field near the village where he lived the team must determine if the killer is a stranger or a local.

The team question police methods as Thomas discovers evidence challenging the time of death. Ashby seems more concerned with building the case against her main suspect. Clarissa notes a parallel with a case from the start of her career.

A post-mortem on a victim of domestic violence brings back troubling memories for Nikki.

With Jenny's murder unresolved, her friends at the women's refuge seek answers.

When a skeleton is found buried in cement, the team have to work out how and why he was found there. Meanwhile, Clarissa receives some devastating new about her mother.

As the team looks further into Hope's death, they find ever more questions and realise more crimes were committed decades ago that need resolving. Clarissa has some difficult choices to make.

Thomas investigates the case of John Sealy, a soldier who died during a military training exercise involving exposure to CS gas. It appears John died from an aneurism, but when Thomas discovers the trace of a possible nerve agent in his system, the family are desperate for answers. Was a chemical weapon involved or is there a more innocent explanation?

It appears John died from an aneurism, but when Thomas discovers the trace of a possible nerve agent in his system, the family are desperate for answers. Was a chemical weapon involved or is there a more innocent explanation?