As Allies thwarted Nazi efforts to build an atomic bomb, Americans rushed to create their own nuclear weapon--unaware that the Soviets were stealing their plans.

"When Hitler invaded Poland on September 1, 1939, Virginia Hall was traveling in Europe. Which was dangerous enough, but as fighting erupted across the continent, instead of returning home, she headed to France. In a country divided between freedom and fascism, Virginia was determined to do her part for the Allies. An ordinary woman from Baltimore, Maryland, she dove into the action, first joining a French ambulance unit and later becoming an undercover...

In the early 1940s, during World War II, Germany's Nazi regime expanded into neighboring European countries. In France, groups of anti-Nazi citizens, known as the French Resistance, fought to stop Germany's reign of terror. A brave woman named Nancy Wake became one of the movement's greatest assets as a spy. In her role, Wake often transported Jews to safe locations and rode her bicycle through German checkpoints to deliver messages and supplies....