With the authorities closing in on Philip, the Jennings family must come together and make a life-changing choice about their future.
A mole hunt within the KGB causes suspicion amongst allies and shatters trust within the Jennings' marriage, meanwhile Stan's plan to keep his mole safe puts her at even greater risk of discovery.
A German assassin has been ordered to kill American scientists involved in the ABM programme. After the mission is aborted, Phillip and Elizabeth must stop him and prevent a possible war.
After picking up a distressing piece of intelligence, Elizabeth takes extreme measures to get close to a Soviet negotiator. Philip shares some stunning news with Henry.
When Philip and Elizabeth are given an urgent task to plant a bug in Defense Secretary Caspar Weinberger's office, they risk exposure when an unwilling maid of the Weinberger home refuses to cooperate.