Marthe Cohn was a young Jewish woman living just across the German border in France when Hitler rose to power. Her family sheltered Jews fleeing the Nazis, including Jewish children sent away by their terrified parents. But soon her homeland was also under Nazi rule. As the Nazi occupation escalated, Marthe's sister was arrested and sent to Auschwitz and the rest of her family was forced to flee to the south of France. Always a fighter, Marthe joined...