The Ultimate Traitor explores the chilling true story of Robert Hendy-Freegard — the conman who posed as an MI5 agent and manipulated his victims through fear, loyalty and lies. A real-life game of trust and betrayal that echoes The Traitors, this episode examines how deception became a weapon — and how ordinary people were drawn into his control, with so many lives destroyed. In the end he was just a Traitor, playing a game that nobody agreed to play.