In the series finale, the Jennings face a choice that will change their lives forever.

Elizabeth wrestles with competing loyalties, and Philip has an encounter that turns into much more than he had bargained for.

Philip and Elizabeth come together for a perilous operation unlike any they've ever had before. Stan and Henry spend a little quality time together.

When Philip and Elizabeth are ordered to go through with a meeting that could potentially be a set-up, they find themselves confronted with unexpected truths about their relationship. Stan's investigation puts him and the FBI even closer to Philip and Elizabeth.

Philip and Elizabeth deploy a plan for the C.I.A.’s Mujahideen visitors. Tensions at the Jennings’ home escalate.

As the summit fast approaches, Elizabeth enlists Philip’s help for a mission that could yield game-changing intel.

With the arms control summit under way, a shocking revelation from Philip throws Elizabeth - and her work - into turmoil. Stan follows a dangerous hunch.

No one is safe as Philip and Elizabeth evacuate their children while trying to complete the mission. Stan holds Nina's future in his hands.

The KGB and the FBI both race to track down a vital agent… everything is at stake.

Philip and Elizabeth struggle with the gravity of unexpected collateral damage. Stan and Oleg hatch a risky plan to help save Nina.

A devastating flaw during a mission forces Philip, Elizabeth, William and Gabriel to confront the depths of their patriotism… and their mortality. In Russia, in striving to be a better person, has Nina put her life on the line?

Elizabeth and Paige take a trip that lands them in treacherous territory. After an emotionally charged mission, Philip turns to an unlikely source for solace. Stan’s plan to save Nina culminates in unforeseen ways.

The Jennings’s approach their breaking points as both Philip and Elizabeth must handle loyal agents. Will they make it through with their patriotism – and sanity – intact?

A surprise assignment from the Centre divides Philip and Elizabeth, forcing them into a moment of profound crisis. Stan gives Henry a tour of the FBI.

A mole hunt within the KGB causes suspicion amongst allies and shatters trust within the Jennings' marriage. Meanwhile, Stan's plan to keep his mole safe puts her at even greater risk of discovery.

It’s autumn, 1987, and as a major arms control summit looms, Elizabeth is pushed to her limits as never before. Philip, meanwhile, has settled into running the newly expanded travel agency – until an unexpected visitor makes a disquieting request.

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.

Philip and Elizabeth’s long-planned mission turns ugly, impacting each of them in different ways. Stan digs in deeper at work as his personal life continues to unravel.

Martha hosts an unexpected guest. Philip and Elizabeth must work a formidable Mujahideen commander. Paige acts out.

Martha must finally face the truth she has denied – and her life may never be the same. Plus, a chilling new development in William’s work forces the Jennings to face the realities of what a biological war would mean.

Elizabeth completes the last steps of a very personal operation… but at what cost?

Philip and Elizabeth are put to the test when a routine mission goes horribly wrong. Stan and the FBI are pushed to their limit when one of their own goes missing.

Philip and Elizabeth feel the weight of a new family secret while following up on the KGB’s interests in South Africa. Stan faces struggles both at work and at home. Martha confronts a shocking development.

Stan pursues a lead that puts him on the trail to one of Gregory's crew members, closing the gap between him and Elizabeth, and reigniting some of the deepest conflicts between her and Philip.

Elizabeth comes back from her injury and straight into what should have been a routine mission – but it goes awry, leaving her and Philip in fear not only for themselves but for their whole network… and family. Paige's suspicions have only grown in her mother's absence. Meanwhile, Stan continues to fall for the Russian agent who has started to play him.