Expert Witness Episode Rating Graph

The heart-wrenching case of eight-year-old Sarah Payne, who was abducted and murdered. A forensic ecologist finds a vital link between the suspect and the gravesite. And an expert witness analyses blood at the scene, where remains are found in a freezer

Some criminal investigations are so complicated that they require a number of expert witnesses to be involved. This programme examines how forensic evidence from a whole team of scientists turned a missing person case into a hunt for a murderer, and then into an investigation into one of Britain’s most notorious serial killers.

Blood traces hidden under paint allow an expert witness to find a killer and free five men from suspicion. An unusual gait identifies the murderer of an office worker.

Marks left by the tread of a shoe help detectives catch a killer terrorising Rochdale, and a forensic linguist deciphers messages written in slang, revealing a murder plot.

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. And a forensic entomologist helps prove a suspected case of extreme dog neglect.

Evidence unearthed by a forensic archaeologist helps to catch the killer of a young woman from Wiltshire. And a case of harrowing neglect suffered by a Welsh teenager is revealed by an insect expert.

Detectives hunting the killer of a young woman from Bolton require the help of a fibre and DNA specialist to arrest their suspect. And police seek the help of a body fluids expert after a bizarre rampage in the Cotswolds.

A fibre specialist from the UK brings closure to Australia’s longest-running murder investigation. And a forensic pharmacologist uses her expertise to ensure a murder charge after two brutal killings.

A blood residue specialist leads police to the killers of an East Sussex waiter, brutally bludgeoned in his flat. And a forensic entomologist uncovers a case of extreme neglect when a Merseyside grandmother is found dead in her home.

When the body of a farmer is found in a lake, a bioarchaeologist helps police reveal how he got there. Meanwhile, when a man is accused of intentionally spreading the HIV virus, a virologist is called on to determine his guilt.

When a man kills four people and goes on the run, a handwriting analyst is brought in, and after a body is found, an expert in pollen links the suspects to the scene of the crime.

When a young nurse disappears, a soil analyst helps find her body and solve the crime. A digital imaging expert proves that what was thought to be an accidental death was murder.

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.

This episode follows two shocking criminal cases in Yorkshire, each involving a woman murdered by her partner, and two expert witnesses with very different disciplines in forensic science who help to deliver justice.

A fifty 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.

When a violent gang use a secret language to discuss a fatal attack, police turn to a forensic linguist to crack their code. And one of the biggest cannabis growing operations ever seen in the UK is brought down with the help of a drugs expert.

In a horrifying case of mistaken identity, a man is stabbed to death in his home. Can an intelligence analyst help convict the suspects? And when a teenager is found beaten to death, a trace evidence specialist helps police confirm the murder weapon.

The brutal, unsolved murder of Rachel Nickell on Wimbledon Common shocked the nation. Ten years on, can a forensic team using new DNA technology identify the killer? And a trace expert’s analysis of glass fragments from a beer glass connects a suspect to a vicious assault.

Insect evidence helps crack the case of missing Warrington teenager Shafilea Ahmed, and a series of convincing John Anster Fitzgerald forgeries are uncovered by an art expert.

A dental expert helps police investigating the mysterious death of a teenage girl, and an autograph expert is brought in to help convict scammers selling fake celebrity signatures.

In our first story, a community reels in total shock when a doting grandmother is found murdered in her home. Detectives search for the killer and suspect it may be someone close to her. The suspect's DNA is found all over the crime scene, but that is easily explained because he lived until recently in the same house. So the police try another route. They approach Kelly Sheridan, an expert witness in fibre evidence, who uncovers a trail of fibres, unravelling the mystery and putting the killer in jail.

When a dismembered body is discovered, police turn to a facial reconstruction expert to help identify the victim.

Soil analysis helps solve a 37-year-old murder investigation in Scotland. In Huddersfield, analysis of insect life on a body found on the moors helps detectives catch a killer.

A team of expert witnesses follow a trail of fibres and DNA to solve three cold cases in Pembrokeshire, and a fraudulent diamond investment scheme is exposed by a gemologist.

After 32 years, expert fibre analysis helps bring the killer of two Brighton schoolgirls to justice, and the analysis of bones found on a Yorkshire moor helps find two killers.

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.

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.

Analysis of text messages reveal a husband's plot to cover up his wife's murder and traces of DNA on decades old evidence helps bring justice to the family of a murdered woman.

How expert analysis of nettles and chalky soil helped catch the killer of Soham schoolgirls and how advances in DNA techniques finally solve the murder known as Beauty in the Bath

Insects establish an accurate time of death, helping to prove a husband killed his wife and analysis of burnt remains in Leeds, uncovers another husband's cold murder of his wife.