Elizabeth targets an old source who could tip the balance of the upcoming summit, as Philip deals with business at the travel agency. Stan learns an old friend is back in town.

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.

A sudden assignment pulls Elizabeth away from her family at a crucial moment. At the FBI, a major development leads Aderholt to approach Stan about an urgent investigation.