Marco Polo, If You Can, Paperback

Master of espionage fiction and National Book Award winner William F. Buckley Jr. brings us another in his best-selling series starring the intrepid CIA agent Blackford Oakes.
When a shadowy Russian mole threatens to undermine the free world's defenses by infiltrating President Eisenhower's National Security Counsel, CIA super-secret agent Blackford Oakes is called in to unmask the imposter. Then, Oakes turns the tables on the Communists by piloting a U-2 spy plane on a Gary Powers-style one-way mission behind the Iron Curtain. Sentenced to death and trapped in the depths of the Lubyanka prison, Oakes may have turned his last trick. Or has he?