Two-time Oscar-nominated director Steve James tells the incredible story of Ted Hall, a very young physics genius recruited in 1944 to help develop the US atomic bomb. With Germany clearly losing the war, Hall became increasingly worried about the consequences of an American monopoly on such a powerful weapon. He decided to pass key information about the bomb’s construction to the Soviet Union.  An explosive secret that he and his wife kept hidden for more than 50 years. A Compassionate Spy combines an extraordinary love story, an espionage drama and a brief history of the Cold War.