After a stroke leaves her husband disabled and fundamentally changed, a spirited Irish wife struggles to keep her family members together. All the while they are under the microscope of an American researcher documenting their recovery process.

The stakes have never been higher for Philip and Elizabeth as personal and professional dangers continue to challenge the Jennings' mission.

In 1980s Washington, D.C., KGB sleeper agents Philip and Elizabeth Jennings take extreme measures to continue their mission and keep their true identities hidden when Stan Beeman, an FBI Counterintelligence agent, moves in across the street from them.

Juliana uncovers a dangerous Nazi plan for ultimate supremacy. Can she convince others to join her in stopping it? Or is it already too late? Though recently celebrated by Himmler, Smith finds that the dangers to his family continue. As the GNR takes retaliatory measures toward the JPS, tensions rise and Tagomi tries to broker peace. A haunted Kido searches for old enemies.