In this episode of Declassified we see how ten Russian sleeper agents managed to infiltrate the United States by living normal lives, their whole goal was to disappear into a community and not be recognised for who they really were. It sparked one of the largest counterintelligence efforts in history as the FBI scrambled to neutralize the threat.Spying is something that has been with us throughout history and this is the world of those who are involved in attempting to infiltrate America.

With narration from Congressman Mike Rogers, who himself is a former FBI agent and Chairman of the House Intelligence Committee, a mad who had oversight of all 16 of the United States intelligence agencies and had access to classified information gathered by the countries operatives, this Declassified episode delivers unprecedented access to the secret world of espionage and the incredible men and women who protect our way of life.