A Killer's Mistake Season 4: Episode Guide & Ratings

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.