A Killer's Mistake

The gripping true-crime series *A Killer's Mistake* returns to Quest for its fifth season, exploring the fatal errors that lead to a murderer's capture. Each episode dissects a real-life case, focusing on the single, pivotal mistake that unraveled a criminal's plan. Season 5 delves into a new set of chilling investigations, revealing how a forgotten piece of evidence, a boastful comment, or an unexpected witness can bring a killer to justice. Through compelling interviews with detectives, forensic experts, and victims' families, the series shows how even the most calculated criminals can be undone by one moment of arrogance or carelessness. The suspense builds as each detail of the investigation is meticulously pieced together. season 5 ended on May 03, 2025 sign up for a reminder.