Season 1

A series spotlighting high-profile espionage cases features dramatic re-creations and interviews with former agents and intelligence officials, and begins with the story of a KGB spy who gave top-secret information to the West in the early 1980s.

A profile of Oleg Gordievsky, a KGB colonel who worked as a double agent for British intelligence for a decade before defecting to the West in 1985.

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