Irene Sofia Lucio

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.

Holmes and Watson are on the hunt for a serial killer after a murder rocks their inner circle; Holmes' neurological recovery regresses and his sobriety wavers as his commitment to catching the killer grows into an obsession.