Arguably the greatest spy for the West during the Cold War, Dimitriy Polyakov is a Russian Military Intelligence General who turned on Russia.
Vladimir Vetrov is a KGB officer who worked for the French intelligence service.
Gabrielle Kleim is one of many women working in West Germany targeted by "Romeo Spies."
While a prisoner in North Korea, George Blake was recruited by the Soviets to spy on the British.
Xialong Zhang and Cao Guangzhi are two Chinese nationals who are caught attempting to steal proprietary information from Apple Inc.
