"In 1942 the Allies were losing, Germany seemed unstoppable, and every able man in England was on the front lines. To "set Europe ablaze," in the words of Winston Churchill, the Special Operations Executive had to do something unprecedented: recruit women as spies. Thirty-nine answered the call, leaving their lives and their families to become saboteurs in France. They destroyed train lines, ambushed Nazis, plotted prison breaks, and gathered crucial...