When Philip and Elizabeth are given an urgent task to plant a bug in Defense Secretary Caspar Weinberger's office, they risk exposure when an unwilling maid of the Weinberger home refuses to cooperate. Stan closes in on a member of the Soviet Rezidentura in an effort to uncover the identities of deep cover Directorate S operatives.

A crucial agent crumbles under emotional distress and threatens to topple a valuable network of KGB informants. Professionally, Philip and Elizabeth are tasked with infiltrating the FBI's new communications encryption system while personally they are forced to grapple with one of the darker aspects of life as a spy.

Philip and Elizabeth discover that their murdered colleague Robert had a wife they never knew about. As they try to determine what she knows and where her allegiance lies, Stan's investigation into Robert's death puts him hot on their trail.

Philip and Elizabeth's troubled marriage is further tested when a mission to discredit a Polish pro-democracy leader reunites Philip with his old flame.

Philip and Elizabeth must stop an assassin from taking out key US scientists, while Stan and the FBI hunt the same man. Grannie shocks Elizabeth with the truth of what happened between Philip and Irina in New York.

A secret brings Elizabeth and Paige together. Back in Moscow, Oleg's own secrets put him under KGB suspicion and a new twist in the Morozov operation creates an opportunity that changes everything.

Events in Moscow strike a personal chord for Elizabeth, leading her to take on a dangerous mission she can't complete without Philip's help, and placing the couple on a collision course with both Grannie and the FBI.

Philip and Elizabeth have qualms about a new assignment, while a specter from Philip’s past creates unforeseen dangers. At the FBI, Stan makes a shocking play that could throw his career into turmoil.

The arranged marriage of Philip and Elizabeth Jennings grows more passionate and genuine by the day, but is constantly tested by the escalation of the Cold War. Tensions heighten upon the arrival of a new neighbor, Stan Beeman, an FBI agent.

When an assassin attempts to kill President Reagan, Philip and Elizabeth scramble to handle the fallout within the KGB. Meanwhile, Stan pressures his source within the Rezidentura to find out if the KGB was responsible for the attempted assassination.

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.

Stan and Oleg wrestle with the harsh consequences of their complicated history as Philip and Elizabeth face a new mission with devastating implications for their country.

Gabriel stuns Philip and Elizabeth with a sudden announcement and a crushing revelation about Philip's past. Stan and Aderholt draw a fly into their web while Oleg and Ruslan ambush their first suspect.

As Paige becomes even more enmeshed in her parents' world, tensions with Matthew Beeman come to a head, Philip and Elizabeth's honeytraps take surprising turns, and Stan faces the consequences of overplaying his hand at the FBI.

As Philip investigates the fallout from the last operation, Elizabeth sticks close to home, concerned for her family until she gets a mysterious distress signal. Meanwhile, a walk-in arrives at the Rezidentura - providing both Nina and Stan with unique opportunities.

Philip and Elizabeth complete their next mission - but not without complications - and Philip's fears about Elizabeth's readiness for action deepen. Stan tracks the KGB walk-in which leads to much praise at work and a deepening of his attachment to, and dependence on, Nina. Meanwhile, Paige snoops into her mother's family background and Oleg begins to scrutinize Nina's secret operation.

Philip uses his agent Charles Duluth to help him gain access to an early precursor to the Internet so that the KGB can bug American government communications. Nina faces the threat of a potential FBI polygraph exam, bringing her closer to KGB colleague Oleg.

Elizabeth and Philip come together to deal with a mission gone wrong but struggle to reconcile their increasingly opposing ideologies. Stan welcomes a Soviet defector, Zinaida, to America. Nina acclimates to her new living arrangements.

Philip and Elizabeth are thrown off balance when things with Tuan take an unexpected turn. Henry makes a startling proposition and Stan has a disturbing encounter with Frank Gaad’s widow.

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.

One of Elizabeth's agents has key intel for sale, but she and Philip find themselves taking increasingly greater risks for what could well be a set-up. Meanwhile, Stan's pursuit of Directorate S suddenly begins to yield unexpected results.

A dangerous Naval officer becomes the key to Philip and Elizabeth’s mission as well as a potential threat to their family's safety. Lucia, a Sandinista intelligence officer working with the Jennings, is tasked with getting Elizabeth access to Capitol Hill. Stan struggles with the potential costs of protecting Nina.

A new mission with international stakes has Philip calling on Annelise for assistance just as an old foe returns to D.C. with a vendetta. Stan makes a discovery that could put the FBI hot on the trail of illegals.

Philip faces a moral dilemma while developing an asset. Philip and Elizabeth’s friction escalates. Stan develops a theory with serious repercussions for national security. Paige makes a surprising birthday wish.

Gabriel has surprising information. Elizabeth begins to take family matters into her own hands. Stan receives upsetting news from his past and turns to Sandra for support.