Mata Hari

Mata Hari, born Margaretha Geertruida Zelle, became famous in pre-war Europe as an exotic dancer and courtesan. During the First World War she moved between neutral and belligerent countries and accepted money connected with German intelligence before later agreeing to work for French counter-intelligence under Georges Ladoux.

French authorities arrested her in 1917 and convicted her of spying for Germany. The strength and interpretation of the evidence have remained disputed, and later accounts have questioned whether she was an effective agent or a convenient symbol during a period of military anxiety and spy mania.

In Alan Bardos’ Enemies and Allies, His investigation intersects with the case of Mata Hari and the French counter-intelligence officer Georges Ladoux, while Room 40’s interception of the Zimmermann Telegram confronts Hall with a strategic dilemma: using the message could help bring the United States into the war but might reveal that Britain had penetrated German communications.