Madame Fourcade's Secret War: The Daring Young Woman Who Led France's Largest Spy Network Against Hitler

"Outside the World War II spy world, few knew that Marie-Madeleine Fourcade was the brains and ingenuity behind the French Resistance, which was so crucial to the Allied victory. She built and rebuilt her network using the names of animals as aliases for herself and her agents. The Hedgehog, as she was known, endured tremendous family sacrifice. But she earned the trust of British and American intelligence, ultimately providing them with a detailed 55-foot-long map of the Normandy coastline where the D-Day invasion would take place."