From New York Times bestselling author Sam Kean comes the gripping, untold story of a renegade group of scientists and spies determined to keep Adolf Hitler from obtaining the ultimate prize: a nuclear bombScientists have always kept secrets. But rarely have the secrets been as vital as they were during World War II. In the middle of building an atomic bomb, the leaders of the Manhattan Project were alarmed to learn that Nazi Germany was far outpacing the Allies in nuclear weapons research; Hitler, with just a few pounds of uranium, would have the capabaility to reverse the entire D-Day operation and conquer Europe. So they assembled a rough and motley crew of geniuses - dubbed the Alsos Mission - and sent them careening into Axis territory to spy on, sabotage, and even assassinate members of Nazi Germany's feared Uranium Club. No theater of the war, from battlefields to laboratories, was considered off-limits, and for good reason: the entire outcome of the...