Quest Red

Animal Cops discover a Doberman in an alarming state; its claws are so long they've grown into the pads of its feet. The dog is rescued but can its leg be saved.

Discover how a few milligrams of forensic evidence can be crucial to a crime investigation and prove the innocence or guilt of the accused.

Exploring the mind of the obsessive murderer, following the work of psychologists as they study the muddled workings of the criminal psyche.

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 - from murders to robberies - with dramatic re-enactments and interviews with agents and forensic scientists who work in the investigations.

Levi Bellfield is a serial killer responsible for the horrific murders of three young women. His ex-partner reveals how his crimes have affected her.

Examines the history and modern evolution of the Texas Rangers, who were formed in the 1830s to protect settlers against attacks from natives.

A thought-provoking look at how drug trafficking has spawned a violent and deadly criminal underground.

How baffling crimes have been solved through evidence provided by insects, beer bottles and other seemingly meaningless objects.

When Peggy Perez-Olivo is shot in the head her husband Carlos insists they were victims of carjackers. The horror that follows will shock even experienced investigators.

Wisconsin police are shocked to find an elderly couple brutally murdered in their home. When family start receiving death threats, will murder strike again.

A couple is shot in their own home but husband Dan Montecalvo survives. The investigation reveals a scheming killer who almost got away with the perfect murder.

42-year-old Miami mum Raquel Calderin vanishes without a trace on her way home from work. The investigation leads detectives into a disturbing family picture.

Real estate developer Jana Koklich vanishes and police suspect her job led her into danger, until a local pastor comes forward with a shocking confession.

When Russel Douglas is found shot in the head in his car on a deserted road, it sparks a decade long case that leaves many with unanswered questions.

We All Go A Little Mad. Police find a family dead, a horror film still playing, a bloody mask nearby - and a letter addressed to the woman who voiced 'The Exorcist' demon.

As cameras follow the work of patrol officers, they must navigate the chaos of a high-stakes series of shootings, high-speed chases and standoffs.

When arrested for historic sexual offences, TV weatherman Fred Talbot tried to hide the truth in police interviews. His repeated response of 'no comment' speaks volumes.

In North Carolina, a convenience store worker is killed, part of a pattern of armed robberies. Police race to arrest the robber before he kills again.

Harold Shipman was a much-loved doctor. Millions watched the GP speaking on TV discussing the benefits of care, not knowing he'd already killed dozens of patients.

As a prominent family awakens to noises in the night, their worst nightmare ensues when their beloved daughter, Terri Ann McCoy is fatally shot.

Three armed men attack a man and flee the scene. Authorities are unable to identify the assailants but are convinced it was the work of the Mafia.

It's touch and go for German shepherd Zeus as the Animal Cops medical team work through the night to remove a collar embedded in his neck.

No matter how clean a crime scene appears to be, the culprit often leaves something behind. Even a fingerprint or shoe tread can lead to a conviction.

Hiding a body can be tricky - it's sometimes easier to obscure the circumstances of death, turning murder into suicide or blaming it on someone else.

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 - from murders to robberies - with dramatic re-enactments and interviews with agents and forensic scientists who work in the investigations.

In 1998, Bachan Kaur Athwal ordered her daughter-in-law to be strangled to death in an 'honour killing'. The victim's family reveal how her murder affected them.

When an employee at an armoured van company receives a call about a money shipment that did not arrive, an FBI search for the missing van begins.

Shannon Sanderson was abducted after a successful night at the casino and police discovered she had been stalked and attacked for her $5,000 winnings.

Follows the FBI investigation into a robbery in which masked gunmen tied up employees at an armoured truck depot and left with $18.9 million.

A family is torn apart when a mother in Florida goes missing. The case stumps detectives, who believe that only the woman's three-year-old son knows the truth.

A landlord approaches his rental home to inspect a broken window when he hears a baby crying. What he finds inside will haunt two families forever.

In 2005, a woman is reported missing when she fails to show up at a Motley Crue concert. To this day, her friends and family wait for her killer to visit her secret grave.

In rural Missouri, the body of a young woman lies dead on a deserted dirt road only days before her wedding. Police uncover surprising secrets in her fiancé's life.

The brutal murders of two teenage girls at a remote lookout point at first seem random. Police uncover a web of secrets among their network of friends.

When Erika Verdecia goes missing, her family launches their own search for her. What their homegrown investigation uncovers is a tragic trail of bloodshed.

In Baytown, Texas, 37-year-old Crystal McDowell disappears without a trace. Can detectives uncover the mistake that gives her killer away.

A divorcée starts a relationship with a seemingly kind father. However, she doesn't see what everyone else sees in her new man - that he is a killer.

Eight-year-old Jamie Lavis was on the bus Darren Vickers was driving before he disappeared. Vickers joined the hunt and spoke on TV - but was hiding an awful truth.

When a young man with a developmental disability vanishes, his legal guardian frantically searches for him. Police turn to CCTV to find him.

Shana Grice was murdered after being stalked by her ex-boyfriend, Michael Lane. He denied involvement, but experts examine police videos to determine the truth.

The town of Cleveland, Oklahoma, is shocked when its esteemed Sheriff is shot dead. Law enforcement determines to find justice for their fellow officer.

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 shocking machete attack on a puppy leaves the medical team fighting to save his life. The Animal Cops embark on the hunt for his attacker.

Contract killings arose out of the need to establish the perfect alibi, hiring someone can deflect guilt. Forensic science is changing this.

Mobile phones, CCTV and cashpoints can track virtually every human move. We see exactly how this aids murder investigations.

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.

Barrister Robert Rinder examines the case of Rolandas Poskus, a man who was found dead in a park in Hull, and Amanda Playle, a woman who was stalked.

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.

A Lost Soul. Lee disappeared one morning after leaving a friend. Had he gone into the wilds, or maybe joined the Israeli army? Follow the hunt for this troubled teen.

On Valentine's Day, Demetrius Graves is fatally stabbed. Two days later, Bonnie Ross turns up dead. Police learn they shared one fateful connection.

Thomas and Lisa Infante had four children and a volatile marriage. One day Lisa announced she'd met someone else and an argument spiralled out of control.

Rogelio Morales sweeps Margarita Sanchez Lemus off her feet. Behind Rogelio's winning smile lurks a monster who will soon show his true colours.

When Jeff Silvernail finds his partner dead at home, it appears a burglary gone wrong. But police soon uncover it is, in fact, the ultimate betrayal.

To solve the murder of a respected young entrepreneur, Detective Dale Mason must navigate a tangled conspiracy and outwit a band of career criminals.

Robert Rinder examines the case of 35-year-old Claudia Lawrence's disappearance. Plus, an unprovoked attack leaves a man fighting for his life.

In 2015, 33-year-old Jonathan Cherol is shot dead in his garden. CCTV footage sends detectives on the hunt for a strange woman and a mysterious vehicle.

Death At The Beach. On Christmas Day 2011, an aid worker was on holiday in Sri Lanka when he broke up an altercation in a hotel bar. His selfless act would end in murder.

When a young mum goes missing in Ellesmere Port, the whole community searches for her. After a tip, Police locate the charred suitcase that holds her remains.

In Texas, on Christmas Eve 2010, a 12-year-old boy vanishes. Police look at those closest to him, but only surveillance footage can reveal the truth.