A Killer's Mistake Episode Rating Graph

A look at how detectives uncovered the crimes of wife-killer Nat Fraser, revealing how the scheming murderer botched the seemingly perfect plot.

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.

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

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.

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

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.

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.

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.

A beloved firefighter, William Walker is killed on his driveway in Cleveland Heights, Ohio. The suspicion quickly turns to his second wife. Police quickly learns, she recruited a team of teenagers to help her do the hit.

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.

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

Douglas Perry was obsessed with prostitutes and shot three dead in 1990. Yet when Doug became Donna, she accepted no responsibility for Doug's crimes.

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

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

When a boxer is paralysed in an accident, an amateur fighter named Thomas befriends him and becomes his carer. However, 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.

Iconic and international murder stories featuring interviews with convicted killers. Each episode focuses on the key error that a killer made which led to their arrest.

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.

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 kind old man is found murdered his family are devastated. However, the police investigating the case discover his niece's bingo habit and backlog of debts would lead her to kill.