Case 1: In November 2000 a criminal gang attempted the most audacious robbery in British criminal history. The target - the world's most perfect diamond on display in the Millennium Dome. Using never-before-seen police footage, and testimony from the men who were there, this is the inside story of the heist of the millennium and the secret Flying Squad operation to foil it. Case 2: Billy Stirrat was a happily married father of two that worked as a gamekeeper. His life was turned upside down following a miscarriage of justice involving his wrongful arrest for the possession of £500,000 worth of amphetamine.