In December of 1938, a chemist in a German laboratory made a shocking discovery: when placed next to radioactive material, a Uranium atom split in two. That simple discovery launched a scientific race that spanned three continents. In Great Britain and the United States, Soviet spies worked their way into the scientific community; in Norway, a commando force slipped behind enemy lines to attack German heavy water manufacturing; and deep in the desert, one brilliant group of scientists was hidden away at Los Alamos. This is the story of the plotting, risk taking, deceit, and genius that created the world's most formidable weapon. This is the story of the atomic bomb.