Quest Red

How a simple clue such as dirt on shoes can place a suspect at a crime scene. Meticulous forensic investigators follow the trails of evidence leading to killers.

Find out how arson investigators can retrieve important clues from scorched rubble, leading to the arsonist.

The bureau investigates the activities of a Croatian terrorist group who gunned down some of their opponents and eliminated others with parcel bombs.

In Beirut armed extremists seize a plane and terrorise everyone on board. The CIA undertakes a daring operation to stop the hijackers; but will they succeed.

Barrister Robert Rinder examines the murder of three young children in 1973. Plus, a mother fights to change the law after her son is killed.

A young woman has to hide her relationship from her orthodox father and protective brother. But, their heavenly relationship quickly becomes a hellish nightmare.

Favourite Son. Billy disappears just after finding out his girlfriend is cheating on him. Is she behind it, or will a perpetrator emerge from beyond the grave.

A traffic accident on the Interstate near Des Moines, Iowa, kills a young mother. Police use construction work cameras to piece together her final moments.

Jeannie Miata was a nurse who killed a woman with a lethal dose of insulin. Experts analyse the actions and motive of this disturbing murderer.

Twenty-one-year-old mother, Lauren Kidd, always follows her heart. It leads her to happiness, but there's a darkness lurking that no one can stop.

Randy Ferguson's life changes forever when he meets single mother, Angela Phillips. But the beautiful life they build together hides an ugly secret.

Tempers flare outside a home where Savannah police officers have uncovered three dead bodies. One argument could offer a vital lead in this horrifying case.

The murder of two children sparks a manhunt that spans three decades. Plus, the National Crime Agency attempts to thwart a gun smuggling operation.

Student Kenia Monge disappears without a trace. The search hits dead ends until detectives uncover chilling surveillance footage, revealing what happened to her.

Tony believes his mother found happiness with Deputy Dave Rogers, until he sees the dark truth a man who uses his badge to terrorize and abuse.

Reveals the devastating and often undiscussed consequences on the people who have nurtured, loved, and raised a killer.

Barrister Robert Rinder examines the murder of three young children in 1973. Plus, a mother fights to change the law after her son is killed.

When a woman's badly decomposed body is discovered in a suitcase in a small North Yorkshire village, detectives must figure out who she is and who killed her.

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.

Reluctant witnesses force police to rely on CCTV after the murder of a father in a Baltimore, Maryland, in his own home.

In Baltimore, police turn to CCTV to hunt for a budding serial killer after two women are strangled to death in one week.

Investigates the tragic cases of innocent people ruthlessly killed by bombers, snipers and spree killers.

The naked body of a Swedish man is found, a father and son are accused of killing a woman and a police officer impostor disposes of her love rival.

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.

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.

The murder of two children sparks a manhunt that spans three decades. Plus, the National Crime Agency attempts to thwart a gun smuggling operation.

In 2015, detective Scott Sanderson uncovered a harrowing case involving a missing mother and her baby. The disturbing truth shatters everyone involved.

A young woman on the brink of starting her dream job disappears, and it's down to forensic officers to gather the clues that may lead to her whereabouts.

Nursing student Michelle Le vanishes without a trace. Police discover CCTV footage of her car driving around a parking lot, but who is the driver.

Roger Dean set fire to a nursing home, murdering 11 people. Experts analyse the actions and motive of this twisted serial killer.

For years, Bill, Stephanie, and their three kids hide their torment while struggling to keep up appearances. But in 2011, the façade shatters for good.

In Genoa, Ohio, John Eichner, his wife and kids look like a happy bunch, but behind closed doors a disturbing pattern of torment and gaslighting plays out for years.

An elderly Arizona couple's murder spurs a statewide hunt for the killer. The investigation culminates in an unexpected arrest.

British criminal barrister Robert Rinder examines the case of 25-year-old Joanna Yeates, who was found strangled to death on Christmas Day in 2010.

Student Dru Sjodin suddenly vanishes after her shift at Victoria's Secret. CCTV footage shows Dru's last movements revealing the chilling reason for her disappearance.

In 2018, police search a backyard in Florida for a body after a once-idyllic marriage sours and turns vengeful, filled with lies and affairs.

A young woman vanishes into a patrol car. For 35 years, she's a Jane Doe, until hypnosis reveals a clue that unmasks a predator hiding in plain sight.

The murder of two children sparks a manhunt that spans three decades. Plus, the National Crime Agency attempts to thwart a gun smuggling operation.

When police discover a young man's body in a Glasgow bedsit, their investigation reveals he died by arsenic poisoning. Was it murder or suicide.

When a woman's head is found in a package, police must identity and the story of her life. The case reveals bigamy, betrayal and brutal murder.

Real-life cases reveal how video evidence has been used to solve a murder. Police reveal how CCTV footage has unlocked the answer to baffling cases.

Detectives turn to CCTV footage after the shooting of an elderly man in Texas. An old pickup truck could hold the key to identifying the man's killer.

Discover how toxicologists look for clues in blood and tissue to bring murders to light, including the case of a wife poisoned by cyanide.

Discover how scientists can search beneath water for proof of homicide, with cases including a woman found floating in a pond tied to a car jack.

Follows FBI investigations into similar armed robberies across the US in which several people were killed by two male suspects.

A convicted bank robber and his partner in crime escape on their way to court and go on to make the biggest bank robbery in Wisconsin history.

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.

Discover how toxicologists look for clues in blood and tissue to bring murders to light, including the case of a wife poisoned by cyanide.

Discover how scientists can search beneath water for proof of homicide, with cases including a woman found floating in a pond tied to a car jack.

A woman, Betty, identifies a dead body as her missing sister Annie - but Annie is still alive. A look at murderers who kill to acquire a new identity.

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.

44-year-old masseuse Larissa Macriello vanishes from her Miami apartment, and police discover a dangerous edge to her carefree lifestyle - but what is the real story.

In 1994, a 55-year-old businessman is found shot in his kitchen. The police suspect his disabled son, but would he have had the capability to carry out a murder.

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.

A maid finds a woman dead in Room 305 of an Oregon hotel. Her grieving husband reveals an open relationship, but was an affair to blame.

A plot to kidnap TV presenter Holly Willoughby is discovered when an undercover cop in the US spots something suspicious in an online chat room.

When investigators suspect a mother's involvement in the death of her two children, Ranger Jim Holland comes in to unearth the truth.

Emile Cilliers attempted to murder his wife, Victoria, by sabotaging her parachute on a 4,000ft skydive. Experts examine Emile's chilling police interview.