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Back up to: Expert Witness

1. Buried Secrets

   15/15 A murder in Glasgow goes cold. Seventeen years on, a soil expert helps convict the killer.
2. Blood on His Hands

   14/15 When a disabled woman is killed, her neighbour is suspected.
3. Unearthing the Truth

   13/15 A boy's killer escapes detection. Thirty years on, a pollen expert finds crucial evidence.
4. The Rachel Nickell Murder: Justice at Last

   12/15 Rachel Nickell’s murder was unsolved until DNA technology finally identified her killer.
5. Blood on the Carpet

   11/15 A mother and son vanish in 1976. 40 years on, a blood analyst helps to find the killer.
6. The Shooting of Olivia Pratt-Korbel

   10/15 An image analyst helps detectives unmask the killer of a young girl in Liverpool.
7. Lured to the Woods

   9/15 When a teen is fatally stabbed, an expert analyses the wounds to shed light on the attack.
8. Beneath the Ashes

   8/15 After fire crews find a body in a burning flat, a blood spatter analyst finds evidence.
9. The Boy in the Woods - The Murder of Rikki Neave

   7/15 A soil expert's evidence helps to convict a killer 30 years after the murder.
10. Murderers, Messages and the Breakfast Killer

    6/15 An intelligence analyst tracks the killers of a man stabbed to death in his own home.
11. Catching a Cold Case Killer

    5/15 Untying the knot in a dressing gown cord used to murder a woman finally nails her killer.
12. Cracking the Killer's Code

    4/15 Police turn to a forensic linguist to crack the code of a gang using a secret language.
13. The Wheelie Bin Killer

    3/15 When a body is found in a wheelie bin, an expert tracks the suspects’ mobile phones.
14. The Body in the Suitcase

    2/15 A 3D-scanning expert uncovers crucial evidence to convict a twisted killer.
15. The Murder of Sarah Payne: Fields of Evidence

    1/15 The murderer of Sarah Payne is linked to the crime by a forensic pollen expert.