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.
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.
Philip juggles the many women in his life; Elizabeth takes drastic measures to complete a mission; Stan asserts a plan to save Nina, with an unlikely ally.
An old foe from Philip's past arrives in town with a vendetta, just as Philip and Elizabeth are on a high-stakes mission.
Philip and Elizabeth's home and work lives collide in new and dangerous ways; Nina struggles to figure out her next steps.
