Expert Witness Episodes Available now
Cracking the Killer's Code—Series 4
4/15 Police turn to a forensic linguist to crack the code of a gang using a secret language.
Buried Secrets—Series 4
15/15 A murder in Glasgow goes cold. Seventeen years on, a soil expert helps convict the killer.
Unearthing the Truth—Series 4
13/15 A boy's killer escapes detection. Thirty years on, a pollen expert finds crucial evidence.
The Rachel Nickell Murder: Justice at Last—Series 4
12/15 Rachel Nickell’s murder was unsolved until DNA technology finally identified her killer.
Blood on the Carpet—Series 4
11/15 A mother and son vanish in 1976. Forty years on, a blood analyst helps to find the killer.
The Shooting of Olivia Pratt-Korbel—Series 4
10/15 An image analyst helps detectives unmask the killer of a young girl in Liverpool.
Lured to the Woods—Series 4
9/15 When a teen is fatally stabbed, an expert analyses the wounds to shed light on the attack.
Beneath the Ashes—Series 4
8/15 After a body is found in a burning flat, a blood spatter analyst looks for evidence.
Murderers, Messages and the Breakfast Killer—Series 4
6/15 An intelligence analyst tracks the killers of a man stabbed to death in his own home.
Catching a Cold Case Killer—Series 4
5/15 Untying the knot in a dressing gown cord used to murder a woman finally nails her killer.
