In January 1943 a lone British agent was dropped over occupied France. His name was Henri Dericourt. His mission was to organise the reception and departure of RAF flights crucial to the secret work of SOE - the Special Operations Executive. Operating out of Paris, Dericourt quickly earned a reputation as one of the best agents in the field.
But within six months of his arrival, SOE suffered their greatest disaster of the war. In the summer of 1943 Prosper, their largest network in France, was wiped out and more than 400 French resistance workers arrested. Post-war investigations established that Dericourt had fed secrets to the Germans ever since he had begun his work in France.
But Dericourt was no simple traitor. What then was his role in the disaster and for whom was he really working? John Woodvine narrates an incredible tale of deception and personal rivalry at the heart of the British Secret Service during World War II.

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