Quest Red

A good coroner provides what is necessary to solve a crime. A bad one can ruin an otherwise rock-solid case.

A makeshift coffin conceals a body - can insects help cops identify the corpse? Plus, a parasite expert proves murder when a woman is found in a dumpster.

A closer look at real FBI cases - from murders to robberies - with dramatic re-enactments and interviews with agents and forensic scientists who work in the investigations.

A closer look at real FBI cases with dramatic re-enactments and interviews with agents and forensic scientists who work in the investigations.

In September 2012, Dale Cregan murdered PC Nicola Hughes and PC Fiona Bone, after luring them to a callout by making a false 999 call.

When 15-year-old Becky Stowe mysteriously disappears, everyone she knows is a suspect. It'll take a surprising tip to finally bring the truth to light.

Will an odd text sent from a mother to her daughter be the critical clue that transforms a missing person's case into a homicide investigation.

Big. In 2010, 36-year-old barman Dexter Bain was brutally killed during a failed robbery. Detectives use CCTV footage and stage a sting operation to prove who pulled the trigger.

When Laci Peterson went missing, her husband claimed he last saw her before he went fishing - but his secret mistress exposed his lies. Experts examine his behaviour.

Roger Harris and his wife Donna built their dream home in Florida, but just after the birth of their second son, a vile secret threatens their sweet, simple life.

To grandparents Ron and Kay Wilkson, family comes first. But in 2016, something evil is prowling close to home, and not everyone will make it out alive.

Pam Jacobs reveals the dark truth about her father. Growing up, she never realised he was a fugitive suspected of the murders of various coin shop owners.

A young woman's ex-boyfriend refuses to take no for an answer. Plus, a young father is left fighting for his life after a brutal assault.

When Rhonda Daugherty vanishes, detectives turn to the public for information. A tip leads to surveillance footage from a hotel that uncovers a journey of deceit.

A young mother begins to wonder if her once-happy, sweet boy is evil, but she could never imagine the true terror her son would become.

When it dawns on George and Margaret Keller that their son hides an evil secret, they are forced to make a heartbreaking choice whether or not to betray their own child.

Emily Lambert goes missing after spending the night at a hotel bar. Two days later, she is found murdered. Can investigators track down her killer on CCTV.

A woman's severed torso is pulled from the Mississippi River; can police identify the victim and catch her killer? Plus, a state trooper makes a grim discovery.

A young woman's body is found in the trunk of a car, forensic clues lead to the killer of a 19-year-old boy and a police officer does the unthinkable.

In 2009, Philip Gattuso is murdered in the quiet town of Fargo. When police can't find any leads, they turn to a witness that never sleeps - surveillance video.

In 2014, Kimberly Robertson's battered body is found on a sidewalk after a date with her boyfriend. Can CCTV footage help detectives identify her killer.

When homicide investigators meet crime writers, it transpires that real-life stories are often stranger than fiction.

A look at when there are no eye-witnesses to murder, photographic evidence can provide investigators with a permanent record of the killer.

When a little girl is abducted the FBI race to locate their prime suspect - a drifter on parole for kidnapping children - but will they find him before it's too late.

Re-examines the investigation into a US bank heist of 1997, in which two armed men opened fire on staff and police officers at close range without mercy.

A young woman's ex-boyfriend refuses to take no for an answer. Plus, a young father is left fighting for his life after a brutal assault.

New in town, Rhonda Smith, finds herself not only with a new job but also a new enemy. After tempers flare Rhonda is discovered barely clinging to life.

Will a terrifying witness account lead a small-town police department in the wrong direction as they try to solve the brutal murder of their friend.

An escaped inmate brutally murders a respected correctional administrator at her home outside the prison in Tennessee. It sets police on a frantic manhunt.

In Elgin, Scotland, a young mother goes missing in 1998. Investigators fear they will never find out what happened until they discover the killer made a key mistake.

A Delaware mum loves a night out on the town. But what starts as innocent fun will lead this 40-year-old down a very dark path paved with jealousy and deadly rage.

On the surface, police officer Albert Pacheco and his wife Cathy live a charmed life in Hawaii. But this seemingly perfect household is hiding something evil.

He Almost Got Away With It. Timothy Bass got away with murder for decades, telling his wife, Gina, he was working the night shift. She believed him until she uncovered his secret.

Europe's Biggest Cocaine Bust And Heist. The UK's coastal agencies come together to stop a ship suspected to be carrying an illegal cargo, sparking a race to find evidence of the stash.

Where's Mom? A loving wife and mother is found brutally murdered at home in Edmond, Oklahoma. Can security camera footage help detectives hunt down her killer.

Where Is Judith? A 60-year-old woman disappears from her rural Florida home in the night, and authorities uncover a similar nightmare just across the county line.

Friends are stunned when an esteemed criminal law professor is executed in his garage. Investigators follow a series of leads that take them on a state-wide hunt.

A police officer is shot dead at point blank range at the Harris County Courthouse outside Houston, Texas. With no witnesses, can security cameras lead to his killer.

Tiny evidence helps bring to justice a murderer who stabbed two young women to death. Plus, the search for the identity of a woman found decapitated.

Discover how a killer can try to cover his tracks, but evidence is hard to conceal when a special breed of investigative dog picks up the scent.

Family man Dr David Cornbleet is brutally murdered in his office. Police must rely on CCTV images of man with a concealed face to lead them to the killer.

When Christie Wilson disappears after a night out, CCTV cameras reveal her gambling with a mysterious man. Can this footage unlock the secrets of what happened.

Poisons can be deadly and are often impossible to detect. Forensic experts show how they can solve these mysterious deaths.

Just a few microscopic cells, from even a single hair or drop of blood, can place a murderer behind bars. What does DNA mean for crime solving today.

Re-examines the 1996 investigation into the abduction of a 17-year-old boy from a shop near his home, followed by ransom demands for $30,000.

New Jersey state trooper Phillip Lamanco is shot dead on duty. Detectives try to find his killers. Is there a link to a terrorist future plot.

Online dream. Real life nightmare. Experts in body language, linguistics, and psychology study police bodycam, spotting the signs that point to the murder of Gabby Petito.

Dismembered human remains are found in a grocery bag on a riverbank - will detectives be able to piece together the victim's identity and catch a killer.

A makeshift coffin conceals a body - can insects help cops identify the corpse? Plus, a parasite expert proves murder when a woman is found in a dumpster.

When homicide investigators meet crime writers, it transpires that real-life stories are often stranger than fiction.

Vivacious single-mom Dana is busy juggling a boyfriend, a jealous ex-husband, and a secret lover. But then, her life is cut short by someone close.

When 15-year-old Becky Stowe mysteriously disappears, everyone she knows is a suspect. It'll take a surprising tip to finally bring the truth to light.

New in town, Rhonda Smith, finds herself not only with a new job but also a new enemy. After tempers flare Rhonda is discovered barely clinging to life.

40-year-old Priscilla Strole seeks a fresh start when she and her teenage son move to a small town in California, unaware it will lead to her untimely end.

When a lifelong Long Islander, Donna Bocklet, announces she's moving to Florida, it sends a shock wave through her friends and family that ends in her murder.

Actress and devoted mother, Pasinetta Prince, relishes the spotlight. But, one day a personal betrayal ends the 40-year-old star's life far too soon.

After the murders of three schoolgirls, riots break out across Britain. Police are outnumbered but then use cameras to hunt down and arrest rioters.

As a wedding nears, a gunman kills a mother at home. When detectives can't expose the lies, they call in Texas Ranger Holland to draw out the truth.

A pilot sweeps a young woman off her feet. But after their child is born, tragedy strikes. Experts expose the truth.