The story of one of the most astonishing episodes of espionage and deception of World War Two.
This is the tale of two men: Claude Dansey, deputy head of MI6, and double agent Henri Dericourt, who was planted with the rival wartime secret service - SOE - at Dansey-s instructions. From there began a terrifying trail of destruction.
After making contact with Dansey in 1942, Dericourt was recruited to SOE as the man desperately needed to organize top-secret flights in and out of occupied French territory. But at the same time Dericourt was in touch with German counter-espionage in Paris. As SOE congratulated themselves on a new asset, Dericourt gave the Nazis everything; every flight, operation and coded message he could.
Against a background of unprecedented deception and betrayal, Dansey-s secret MI6 operation eventually led to the arrest of nearly one thousand men and women, hundreds of whom died in concentration camps.
How did it go so wrong?
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