"They were teachers, students, chemists, writers, and housewives; a singer at the Paris Opera; a midwife; a dental surgeon. They distributed anti-Nazi leaflets, printed subversive newspapers, hid resisters, secreted Jews to safety, transported weapons, and conveyed clandestine messages. The youngest was a schoolgirl of sixteen, who scrawled 'V' (for victory) on the walls of her lycée; the eldest, a farmer's wife in her sixties who harbored escaped...