During World War II, a group of physicists who had once been close friends found themselves on opposite sides of a deadly race. German scientist Werner Heisenberg and American physicists Robert Oppenheimer, Enrico Fermi, and Sam Goudsmit were all leading figures in nuclear research. But after the attack on Pearl Harbor, their shared passion for science turned into a high-stakes competition to build the world’s first atomic bomb—a weapon that could determine the outcome of the war. Heisenbe...

Winner of the Paul Cowan Non-Fiction Award given by Peace Corps Worldwide.After a devastating run of German victories, Allied troops are beginning to halt Hitler’s advance. But far from the battlefields, Allied scientists are struggling.Intelligence reports put them a distant second behind the Germans in a competition that could determine the outcome of the war: the race to build the world’s first nuclear weapon.For the Allies’ top scientists, the r...