The first case in this episode follows the baffling deaths of married couple Carol and Stephen Baxter, found slumped in chairs in their Essex conservatory on Easter Sunday 2023. After their daughter Ellena raises the alarm, she makes the grim discovery with the help of the couple’s close friend Luke D’Wit. \n\nAt first, there is no obvious cause of death, no sign of foul play and no clear motive. Police know Carol had been battling Hashimoto’s disease, an autoimmune disorder, and the couple were following a health regime to ease her symptoms, including turmeric smoothies prescribed by an online doctor, Dr Andrea Bowden. But the post-mortem blew the case open. Both Carol and Stephen had fentanyl in their systems, with no prescription and no reason for it to be there. \n\nDetectives called in forensic toxicologist Fiona Perry for deeper analysis. She confirms the fentanyl and also finds traces of promethazine, a sedative commonly used in sleeping tablets. \n\nThat breakthrough leads police straight to a copy of the couple’s will, leaving everything to neighbour Luke D’Wit. A search of his home uncovers devices showing he had been posing as Dr Andrea Bowden and other fake identities, along with proof he forged the will found in the Baxters’ house. Despite his denials, D’Wit is convicted of murder and sentenced to life with a minimum term of 17 years. The programme includes revealing interviews from crime reporter Daniel Rees, consultant endocrinologist Dr Naveed Younis and forensic psychologist Kerry Danes. \n\nIn the second case in this programme, detectives believe that two separate murders are the work of the same suspect. \n\nWhen an elderly lady is found dead in her home in a quiet part of Worcestershire, in January 2012, police launch a large-scale investigation. Betty Yates was a popular churchgoer and lived alone in a house on the banks of the River Severn. She was found beaten and stabbed, and the killer appeared to have tidied up before leaving the property. He has also left behind his footprint on a yoga mat, near to the body. \n\nJust six weeks later, the body of the Rev John Suddard, a 59-year-old Anglican vicar, was found dead at the Vicarage of St Mary’s in Thornbury, just over 70 miles from the first murder. A humiliating scene had been created around the dead man’s body, and it appeared that the killer stayed overnight so was in no rush to leave after committing the horrendous crime. But when he did, a bloody footprint was left on the carpet. \n\nDetectives from two police forces start comparing the cases and believe they could be linked. \n\nCCTV footage from outside the second murder scene identifies Stephen Farrow, and it isn’t long before they have him in custody. \n\nExpert witness Padraig O’Shea is a marks and traces specialist and carried out thorough examinations to prove that the soles of Farrow’s boots matched the print left at both crime scenes. He was charged with two counts of murder, and further work by Padraig also linked him to a burglary, one month before the murder of Betty Yates. \n\nThe programme includes insight from BBC journalist Liz Beacon.
Source: BBC 1
Series 5: 3. A Deadly Dose
The first case in this episode follows the baffling deaths of married couple Carol and Stephen Baxter, found slumped in chairs in their Essex conservatory on Easter Sunday 2023. ...
08-07-2026
BBC 1
Series 5: 2. Death On Duty
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BBC 1
Series 5: 1. Intent To Kill: The Ashley Dale Murder
The true crime documentary series that reveals how expert witnesses helped solve some of the UKs most complex major crime cases. \n\nThis episode starts in Liverpool, where 28 ...
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BBC 1
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Now more than ever, forensic science is opening up the possibility of catching criminals for crimes that have remained unsolved for years. In this episode, a case that had lain ...
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BBC 1
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22-04-2026
BBC 1
Series 4: 3. The Wheelie Bin Killer
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BBC 1
Series 4: 1. The Murder Of Sarah Payne: Fields Of Evidence
True crime documentary series that reveals how expert witnesses helped solve some of the UK's most complex major crime cases. \n\nThis programme travels to Sussex to investiga ...
20-04-2026
BBC 1
Series 1: 15. 60s Dna And Fibres Around The World
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.
13-06-2025
BBC 1
Series 1: 12. Pollen, Chalk And Dna
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12-06-2025
BBC 1
Series 2: 13. A Scottish Murder And Artful Deceit
An expert in mobile phone technology tracks the movements of a murder suspect, and an expert in art fraud determines whether a very expensive painting is genuine or fake.
07-06-2024
BBC 1
Series 2: 7. Body In The Bog And Bomb In The Boot
An expert witness uses soil analysis to find the body of a missing woman feared murdered, and a cell site expert uses his tracking skills to catch a killer in Northern Ireland.
28-05-2024
BBC 1
Series 4: 11. Blood On The Carpet
In 1976, Renee MacRae and her infant son Andrew are reported missing. The car they were travelling in is found on fire in a lay-by near Inverness. Neither will ever be seen agai ...
12-05-2025
BBC 1
Series 2: 4. Body In The Snow And Betrayed By A Text
After a 25-year-old woman goes missing in Bristol, the police launch a major missing-person enquiry. Soon after, the body of the young woman is discoved by dog walkers on Christ ...
14-09-2023
BBC 1
Series 3: 6. Face Of A Killer And Proof In The Pollen
When a young man is stabbed to death, a facial recognition expert helps Merseyside Police catch the killer. And a specialist palynologist’s help is needed by detectives in ...
03-02-2025
BBC 1
Series 4: 12. The Rachel Nickell Murder: Justice At Last
On 15 July 1992, while walking with her two-year-old son on Wimbledon Common, Rachel Nickell was brutally murdered, with the little boy left clinging to her body. The police lau ...
13-05-2025
BBC 1
Series 3: 5. Written In Blood And The End Of The Line
When two men are wrongly convicted of murder, a forensic blood spatter analyst helps to prove their innocence. And an expert witness uses mobile phone analysis to help police br ...
30-05-2025
BBC 1
Series 1: 6. Dna, Fibres And Bones
In this episode, we reveal how the tenacity of a team of forensic scientists helped finally catch the killer of two children in Brighton. Also, when bones were discovered on moo ...
06-06-2025
BBC 1
Series 1 (extended Versions): 9. Paint, Blood And Fingerprints
A forensic art expert proves paintings by a well-known artist are fake, blood spatter patterns in a hotel help catch the killer of a father of three, and there's a fingerprintin ...
15-12-2022
BBC 1
Series 4: 4. Cracking The Killer's Code
Our first case concerns a young man, Dolton Powell, fatally stabbed by an armed gang after a party. A group of suspects are arrested and questioned, but they remain tight-lipped ...
22-04-2026
BBC 1