When the Germans invaded her small Belgian village in 1914, Marthe Cnockaert's home was burned and her family separated. After getting a job at a German hospital, and winning the Iron Cross for her service to the Reich, she was approached by a neighbor and invited to become an intelligence agent for the British. Not without trepidation, Cnockaert embarked on a career as a spy, providing information and engaging in sabotage before her capture and imprisonment...