" The astonishing story of Dr. Josephine Janina Mehlberg--a Jewish mathematician who saved thousands of lives in Nazi-occupied Poland by masquerading as a Polish aristocrat--drawing on Mehlberg's own unpublished memoir. World War II and the Holocaust have given rise to many stories of resistance and rescue, but The Counterfeit Countess is unique. It tells the remarkable, unknown story of "Countess Janina Suchodolska,"...