7/15. An expert witness helps police link a drug gang to the death of a Vietnamese man in Wales. And DNA experts gather evidence that identifies the killer of a man from Bristol. Also in HD. [S]
14/15. A forensic biologist works tirelessly to match DNA to the killer of Julia James, and an entomologist links a killer to a double murder. Also in HD. [S,AD]
4/15. A pathologist and forensic scientist work together to convict the twisted killer of Elaine Collie, and a Home Office pathologist links two suspects to a double homicide. Also in HD. [S,AD]
3/15. A forensic toxicologist proves that an Essex couple's cause of death points to murder, and a footprint expert links a killer to two different murder scenes. Also in HD. [S,AD]
2/15. A voice analyst makes a positive link to the killer of two police officers, and a lead forensic scientist identifies a phone snatcher from a shoe he left behind. Also in HD. [S,AD]
3/15. 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. Also in HD. [S,AD]
11/15. 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. Also in HD. [S]
9/15. 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. Also in HD. [S,AD]
8/15. 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. Also in HD. [S,AD]
4/15. When a woman is the victim of an acid attack in Brighton, an expert pieces together hours of CCTV footage to identify the suspect. Also in HD. [S]
3/15. When a 21-year-old student is murdered and dumped in the Humber Estuary, a forensic biologist helps police bring her killer to justice. Also in HD. [S]
3/15. 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. Also in HD. [S]
2/15. A twisted killer throws two suitcases containing severed remains into a canal, and it's down to a 3D-scanning expert to uncover the crucial evidence needed to convict him. Also in HD. [S]
14/15. A dentist's expertise in forensics helps police to connect a man to the disappearance of his wife. And a soil expert helps to bring convictions against three heritage thieves. Also in HD. [S]
12/15. Detectives hunting the killer of a young woman from Bolton require the help of a fibre and DNA specialist to arrest their suspect. Also in HD. [S]