Expert Witness
Expert Witness is a TV show on BBC1. How some of the UK’s most serious and complex cases were solved by the expertise of a band of unsung heroes – the expert witnesses. Gripping true crime stories. The program has been available since 2025. A total of 7 episodes have been broadcast, most recently in April 2026.
Last episode
Expert Witness
In a case of mistaken identity, a man is stabbed to death. An intelligence analyst helps convict the killers, and a trace evidence expert helps find the weapon used to kill a teenager.
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Untying the knot of a dressing gown cord used to kill a woman in 1984 finally reveals the perpetrator. And expert analysis of muddy shoes helps find the murderer of a missing student.
When a killer gang use a secret language to discuss an attack, police turn to a forensic linguist. And a huge cannabis operation is brought down with the help of a drugs expert.
When a body is found in a wheelie bin in a lake, a cell site analyst tracks the suspects’ mobile phones. And when a man disappears, a soil expert helps identify his killers.
When eight-year-old Sarah Payne is murdered, a pollen expert finds a vital link between the suspect and the grave. In another case, a blood spatter expert is called when a body is found in a freezer.
Series 1
A 50-year-old cold case murder is solved by DNA and the tenacity of an expert witness, and a murder investigation is solved by tracking unusual blue fibres around the world.
How expert analysis of nettles and soil helped catch the killer of the Soham schoolgirls, and how advances in DNA techniques solved the murder known as the Beauty in the Bath.