Mrs Mahoney's secret war : the untold story of an extraordinary young woman's resistance against the Nazis

The untold story of an extraordinary young woman's resistance against the Nazis. Gretel helped protect fugitives hunted by the Gestapo, hid her Jewish doctor in her cellar. Called up to serve as a typist in the Wehrmacht, Gretel allied herself with the resistance, passing on secrets learned from her work sending and receiving messages via the Enigma encryption machine.