A ballistics expert proves the shooting of a young woman was murder not manslaughter, and a forensic scientist secures justice for a cold case victim, 20 years after the crime.

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.

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.

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.

An expert witness uses fibre analysis to solve an execution-style murder, and after 26 years in prison, a man walks free when a forensic scientist links DNA to the real killer.

Forensic explosives experts are tasked with examining the crime scenes after the London bombings to establish if the devices had the signature of any known terrorist organisation.

A blood spatter analyst helps puts the killers of a 16-year-old behind bars, and a forensic speech expert matches a voice on police dashcam to the killer of PC Ian Broadhurst.

A forensic archaeologist locates the body of a teenage girl buried in a cellar, and an expert in scanning technology sends a homemade gun maker to jail.

A forensic image analyst identifies a killer from images in CCTV, and a forensic specialist helps police unravel the truth when a case goes from missing to murder.

A forensic biologist uses modern DNA techniques to solve the cold case murder of Hilda Murrell, and cell site analysis helps place a suspect at the scene of Abdul Deghayes’s killing.

When a man kills his ex-wife, a forensic archaeologist helps determine if it was premeditated murder, and a cell site analyst follows a phone trail that convicts violent bank robbers.

A fibre analyst uses a groundbreaking technique to solve the murder of 91-year-old Edwin Hiles, and a forensic fire investigator helps to uncover the truth behind a tragic house fire.

A forensic scientist and a fingerprint expert identify a killer nearly 60 years after the crime, and a plant scientist helps expose a fraudster in a fake tea-growing operation.

A forensic biologist works tirelessly to match DNA to the killer of Julia James, and an entomologist links a killer to a double murder.

A skilled voice analyst proves the killer of a missing man is very close to home, and a UK fingerprint expert helps to overturn a miscarriage of justice.