Stoic Vera Atkins was determined to build a network of female agents, Virginia Hall made a daring escape from France, Mathilde Carré was a treacherous double agent, Noor Inayat Khan was a Muslim princess turned fearless radio operator, young mother Yvonne Cormeau sought revenge, and Yolande Beekman was a young artist turned spy. Amid covert operations, betrayal, and mounting danger, they defy the odds, each demonstrating unparalleled courage - and some paying the ultimate price.