At home he was Kees Jan Dellebeke, an ordinary married civil servant. In another city, he led as Kees D. a female as a business ‘consultant’, cover for his foreign work. With a second passport and invented life story, he boarded the plane to start spying in distant countries. For forty years he worked for the Dutch intelligence and security service. A tip of the veil, he lights up in his book Not everything remains secret.

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