Philip and Elizabeth disagree over handling orders from the Centre; Philip enlists Annelise on a mission with an unexpected outcome; Stan tries a new approach to mending his marriage with Sandra amidst learning tough news about Nina.
Elizabeth and Philip come together to deal with a mission gone wrong, but struggle to reconcile their ideologies; Stan welcomes a Soviet defector to America; Nina acclimates to her new living arrangements.
An old foe from Philip's past arrives in town with a vendetta, just as Philip and Elizabeth are on a high stakes mission.
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.