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 2024. A total of 48 episodes have been broadcast, most recently in June 2025.
Last episode
Expert Witness
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.
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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.
Analysis of text messages reveal a husband’s plot to cover up his wife’s murder, and traces of DNA on decades-old evidence help bring justice to the family of a murdered woman.
A wrongful conviction is overturned by re-examining microscopic particles on a van seat, and an attempted murder outside a nightclub is solved by a facial comparison expert.
A body left in a field prompts the examination of pollen, establishing a new forensic discipline, and fibres fused with car wreckage prove who caused a fatal traffic collision.
After 32 years, expert fibre analysis helps bring the killer of two Brighton schoolgirls to justice, and the analysis of bones found on a Yorkshire moor helps find two killers.
Soil on a spade helps catch the killer of a young woman from Swindon, who for years evaded justice and a stone stuck in the sole of a shoe helps solve a murder in Manchester.
Marks left by the tread of a shoe help detectives catch a killer terrorising Rochdale, and a forensic linguist deciphers messages written in slang, revealing a murder plot.
Blood traces hidden under paint allow an expert witness to find a killer and free five men from suspicion. An unusual gait identifies the murderer of an office worker.
Soil analysis helps solve a 37-year-old murder investigation in Scotland. In Huddersfield, analysis of insect life on a body found on the moors helps detectives catch a killer.
Series 3
When two men are wrongly convicted of murder, a forensic blood spatter analyst helps to prove their innocence.
When a woman is the victim of an acid attack in Brighton, an expert pieces together hours of CCTV footage to identify the suspect.
When a 21-year-old student is murdered and dumped in the Humber Estuary, a forensic biologist helps police bring her killer to justice.
When the body of a farmer is found in a lake, a bioarchaeologist helps police reveal how he got there.
When a dismembered body is discovered, police turn to a facial reconstruction expert to help identify the victim.
Series 4
The 2005 murder of a Glasgow woman goes cold, but 17 years on, a Dutch soil expert helps convict the killer. And in another murder case, a blood analyst uses an unusual technique to crack the crime.
A disabled woman is murdered, and her neighbour is the prime suspect, but it takes a doctor to help put him in jail. And a linguistics expert helps convict a man stalking his ex.
A young boy is murdered, but his killer is not found. Thirty years on, a pollen expert finds crucial evidence. And a blood and fibre analyst helps find the killer of a shopworker.
Rachel Nickell was murdered in 1992. Ten years later, a team using new DNA technology finally identify her killer. In another case, a trace expert uses beer glass fragments to find an assailant.
A mother and her son vanish in 1976, leaving just a burnt-out car. Forty years later, a blood analyst helps police find out the truth. And a phone analyst helps find the killer of a drowned man.