Were the D-Day landings saved from failure because of a lone secret agent? Agent Garbo tells the astonishing story of a self-made secret agent who matched wits with the best minds of the Third Reich - and won. Juan Pujol was a nobody, a Barcelona poultry farmer determined to oppose the Nazis. Using only his gift for daring falsehoods, Pujol became Germany's most valued agent - or double agent: it took four tries before the British believed he was really on the Allies' side. In the guise of Garbo, Pujol turned in a masterpiece of deception worthy of his big-screen namesake. He created an imaginary million-man army, invented armadas out of thin air, and brought a vast network of fictional subagents whirring to life. His unwitting German handlers believed every word, and banked on Garbo's lies as their only source of espionage within Great Britain. For his greatest performance, Pujol had to convince the German High Command that the D-Day invasion of Normandy...