Two Chinese nationals apparently caught attempting to steal proprietary information from Apple Inc and Tesla's Autonomous Driving vehicle for a Chinese competitor.

The activities of George Blake, who while a prisoner in North Korea, was recruited by the Soviets to act as a double agent against the British. Discovered in 1961 and sentenced to 42 years in prison, he managed escape and fled to the Soviet Union in 1966 to live out his days east of the Iron Curtain.

This episode focuses on Vladimir Vetrov, a KGB officer who worked for the French intelligence service. The so-called Farewell Document, shared with US President Reagan, included Soviet intelligence gained by Vetrov.

This episode focuses on Russian General Dmitri Polyakov, who was arrested, tried and executed for switching sides.