D-Day, 6 June 1944, the turning point of the Second World War, was a victory of arms. But it was also a triumph for a different kind of operation: one of deceit... At the heart of the deception was the ` Double Cross System`, a team of double agents whose bravery, treachery, greed & inspiration succeeded in convincing the Nazis that Calais & Norway, not Normandy, were the targets of the 150, 000-strong Allied invasion force. These were not conventional warriors, but their masterpiece of deceit saved thousands of lives. Their codenames were Bronx, Brutus, Treasure, Tricycle & Garbo. This is their story.