Georges Ladoux

Georges Ladoux was an army captain and from 1914 the head of the Deuxième Bureau, French military intelligence during World War I. He was responsible for recruiting Mata Hari as a French spy. Ladoux was later arrested for being a double agent himself, but eventually cleared of all charges.

References: http://www.trutv.com/library/crime/terrorists_spies/spies/hari/6.html