Oleg Gordievsky was a long standing KGB double agent who was a British asset. He defected to Britain in 1985.
A 24-part series which deals with the relations between the United States, the Soviet Union and their respective allies between the end of World War II to the collapse of the Soviet Union in 1991.
A dangerous game is played in the 80s as the Cold War brings two superpowers to the brink.