A Killer's Mistake - Episode Guide

A look at the key errors made by murderers that led to their arrest starts with Paul Hutchinson, who abducted, raped and strangled Colette Aram in 1983.

In an idyllic place - a mother disappears from the family home…the front door was left open. She was meant to be collecting her child from school but she didn't turn up. The police were called to the home later that evening, Nat Fraser her husband had been staying elsewhere at the time of her disappearance. A missing person investigation began, but the evidence didn't stack up and detectives began to fear she had been abducted and murdered.

A closer look at the subtle clues that led police to Jesse Matthew, a former cab driver who kidnapped and killed two Virginia college students.

A look at how police tracked down Stephen Port, the east Londoner responsible for murdering at least four men and for committing multiple rapes.

The story of how police closed the net on rogue cop Kent McGowen after he killed a woman at her home in Houston in 1992.

An in-depth look at how Arizona serial killer William Inmon was brought to justice after killing three people.

An in-depth look at how police brought Tony McCluskie to justice after he murdered and dismembered his sister, EastEnders actress Gemma McCluskie, in 2012.

The story of how, in 2009, police closed the net on Anthony Sowell, the prolific American serial killer known as the Cleveland Strangler.

A look at how the Thames Valley Police investigated the death of a wealthy Oxford antiques dealer and ultimately tracked down and caught his killer.

The murder of four members of the Ding family by Anxiang Du in Northamptonshire in 2011, focusing on the key error that he made which led to his arrest.

When a boxer is paralysed in an accident, an amateur fighter named Thomas befriends him and becomes his carer. But his kindness comes at the ultimate price.

A cunning fraudster makes a habit out of exploiting women for money after successfully murdering his first wife for a life insurance payout. 

Doug was obsessed with prostitutes and shot three dead in 1990. But then Doug became Donna, and she accepts no responsibility for Doug's crimes. 

A woman's mysterious death raises eyebrows when it emerges that her husband made jokes to colleagues about committing the 'perfect murder'.

When a husband starts playing away, it's his wife that pays the ultimate price when she catches wind of his affair.

The case of Iain Lawrence, who thought he had hit the jackpot when he found love with a successful businesswoman - but things took a deadly turn.

The case of Rahim Mohammaddi, who brutally killed the elderly woman that took him under his wing.

A couple with a deadly pact carry out a chilling murder together when the wife commits the ultimate betrayal. But the killing spree doesn't stop there.

A vulnerable man thinks he's found true love when he shacks up with a wealthy, charismatic older woman - until things take a deadly turn.

A sadistic man targets drug-addicted prostitutes and buries them in shallow graves he called his 'garden'.

In Louisiana, 23 young men are found dead over a nine-year period. Investigators search for the Bayou Strangler but a break in the case comes only after a key error by the killer.

For years Pawel Relowicz's perverted crimes went undetected. His offending intensified until he raped and murdered student, Libby Squire. But as his bravado increased, his attention to detail demised..

Torontos's most prolific serial killer, Bruce McArthur was the small town man whose sexualty was at odds with his religion.. It would take the deaths of 8 young men before police caught their man

After murdering her husband in Minnesota, she travels to Fort Myers, Florida to kill a woman and stole her identity. A gambling addict who will do anything to feed her habit. Police scramble to catch one of America's most wanted criminal.

When Sarah Wellgreen suddenly disappears, detectives pour all their resources into finding her. But after discovering no evidence of her, they investigate closer to home.

17-year-old Jayden Parkinson was attracted to the bad boy allure of Ben Blakeley. But he started to lead her down a chaotic path that resulted in her disappearance.

Natalie and Paul had a seemingly idyllic relationship. But when she suddenly disappears, the investigation uncovers a dark reality of control and violence.

When Katherine Smith connects with Tony Moore on a dating site, she believes she's finally found love. But her dreams shatter when his true identity is revealed.

The disappearance of Denise Williams' husband leaves her devastated. But, when his mother investigates, she discovers the heart-wrenching truth of his demise

Serial killer Donald Miller was jailed for the murder of four victims and two murder attempts. The survivors speak out as Miller's parole date draws near.

For every murderer behind bars, there was a mistake that gave them away. Investigators and those close to the case discuss the key error that led to an arrest.

When Susan Waring, a 45-year-old mum-of-five with learning difficulties, disappears in 2019, all eyes turn to the new man in her life, Alan Edwards.

On a stormy night in Memphis, Micah Rine Pate mysteriously disappears, leaving behind unanswered questions and a husband whose story just doesn't add up.

Keeley McGrath kept her struggles hidden. It was only after Anthony Davis took her life that her family discovered the silent torment she endured.

Kevin Lewis's refusal to let go of his ex-wife triggers a series of events involving a teenage hitman and an obsessed lover ending in tragedy.

When Kerry Woolley is murdered, her boyfriend Ian Bennett plays the role of the grieving partner. But detectives soon uncover a trail of deception.

Ashley Wadsworth left Canada for a new life in the UK with Jack Sepple, a man she fell for online. But her dream quickly turns into a nightmare.

Savannah Paschal's husband, Trent, becomes jealous and obsessive and she tries to leave. But, before she can, Trent makes a deadly decision.

Anthony Shore is a predator who stalks and strangles his victims. For years, he eludes investigators until an unrelated assault presents a lead.

When patients at a respected Texas hospital die unexpectedly, no one suspects foul play until investigators uncover a chilling pattern.

On Halloween, police discover the body of Ildiko Bettison in her Chessington home. Detectives follow a trail of missteps to uncover the truth.

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

Hollie Gazzard is murdered at work by her ex-partner, Asher Maslin. What critical mistake gave police what they needed to bring the killer to justice.

When Alice Ruggles is found dead in her flat, detectives uncover a tale of obsession. Police must distinguish truth from lies to solve this case.