Based on a shocking true story, Deceit explores the controversial 1992 undercover operation that followed the murder of Rachel Nickell. Niamh Algar stars as an ambitious undercover officer, known as “Lizzie James,” who is tasked with luring a suspect into confession through an elaborate deception. As the lines between duty and identity blur, the case exposes deep flaws in policing, manipulation, and morality. Tense, unsettling, and psychologically rich, Deceit offers a haunting look at the cost of truth and the damage of obsession.