June 6th, 1944: nearly 130,000 Allied soldiers storm Normandy's beaches, initiating the liberation of France from the Nazis. Behind the scenes of this major event of WWII, British MI-5’s double agents contributed to the largest deception campaign of the war. Their mission: to trick the Germans into thinking that the Allies would land elsewhere to keep German troops out of Normandy. In this episode of “Spies of War”, relive this extraordinary mission contributing immensely to the success of D-Day.