CIA agent Napoleon Solo and KGB agent Illya Kuryakin team up on a joint mission to stop a mysterious international criminal organization, which is bent on destabilizing the fragile balance of power through the proliferation of nuclear weapons and technology. The duo's only lead is the daughter of a vanished German scientist, who is the key to infiltrating the criminal organization, and they must race against time to find him and prevent a worldwide...

The stakes have never been higher for KGB operatives Philip and Elizabeth Jennings than in this pulse pounding fourth season. Still grieving the death of her mother, Elizabeth berates Paige for telling her pastor about her parents' covert profession. A deadly bioweapon threatens Gabriel's life, and the couple shatters the lives of loved ones when Martha is told Clark's true identity and Elizabeth betrays her friend Young-Hee.

Two undercover KGB agents pose as a married American couple in order to spy on the United States government during the Cold War.

Philip and Elizabeth find themselves at odds over their daughter's future now that the KGB is determined to recruit her. FBI agent Stan Beeman rededicates himself to uncovering the identities of the Russian spies. "The cast crushed every game-changing beat."--Entertainment Weekly