Elizabeth and Philip meet with the eponymous colonel, even though they suspect a trap. Meanwhile at the FBI, Stan's draws ever closed to his neighbors' true identities.
Nina finds that her future is Stan's hands. Meanwhile, Paige and Henry are moved to safety as their parents attempt to complete their assignment.
When the KGB conducts a hunt for moles within their organisation, it results in a breakdown in trust with allies, as well as between Philip and Elizabeth. Stan comes up with a plan to keep Nina safe, but she ends up at greater risk.
While a routine mission for Philip and Elizabeth goes awry, the FBI is in panic mode due to a missing agent.
Stan unknowingly gets closer to Philip and Elizabeth when he follows a lead that will point him towards one of Gregory's crew.
While Stan unexpectedly appears to be getting closer to a Directorate S cell, Philip and Elizabeth worry about being caught in a sting when they are ordered to meet with a new important source.
An assassination attempt on President Reagan causes chaos in both the FBI and KGB. Stan puts pressure on his new spy to find out if the Soviets were responsible.
Trying to put their distrust aside, Elizabeth attempts to re-assert control over one of her agents and Philip is reunited with a woman from his past.
Philip and Elizabeth Jennings seem like any other American married couple, living in Washington D.C. in the 80's. However, they are actually highly trained KGB spies, who must kidnap out a high-ranking defector and return him to Russia.
A personal situation in Moscow causes Elizabeth to embark on a mission which puts the couple in danger from both the FBI and the KGB.
As Philip gets Fred prepared for a crucial operation, Elizabeth tries to exfiltrate Jared. Meanwhile, Arkady forces Stan to choose.
As Stan investigates the Jennings' dead comrade, Robert, Philip and Elizabeth are shocked to discover he had a wife they were unaware of.
Philip and his wife find that they are racing against their FBI neighbor when tasked with preventing the assassinations of top US scientists. Meanwhile, Elizabeth is shocked by Claudia's revelationsconcerning Philip and Irina.
The Jennings receive orders to infiltrate the encryption system that the FBI have recently adopted. Meanwhile, a KGB agent under emotional distress risks the exposure of a crucial KGB network.
The spy couple are set the seemingly impossible task of bugging the Defense Secretary's study before a crucial meeting in 6 days time.
While the Jennings find that their work and home lives collide, Nina tries to figure out her next move.
Both Elizabeth and Philip are impacted when their mission goes awry. Meanwhile, Stan's life continues to deteriorate.
While Stan continues pursuing the illegals, Philip investigates Stealth and Elizabeth is shocked when she uncovers something about Kate.
While Elizabeth and Philip come to terms with unexpected collateral damage, Stan convinces Oleg to help him on a plan rescue Nina.
Neither of the Jennings spies find their latest missions without cost. Meanwhile, Stan's conflict with Oleg sees him trying to get access to an American military program.
While Philip's friction with Elizabeth’s grows, he faces a moral dilemma on how to handle a new asset. Meanwhile, Stan has concerns about his protectee and Paige surprises her parents with her birthday request.
Elizabeth and Philip find they have not only put themselves and their network at risk, but also their family, when a routine mission goes awry. Meanwhile, Nina starts to change her relationship with Stan and Paige becomes more suspicious of her parents.
Philip aks Annelise for help on his latest mission and Stan discovers something that could bring him closer to the KGB Illegals.
Elizabeth and Philip make a dangerous Naval officer the key to a mission, but also a threat to their safety. Also, a Sandinista agent must gain access to Capitol Hill for Elizabeth and Stan finds that protecting Nina has a price.
Elizabeth receives a distress signal and Philip tries to work out what the consequences of their last operation will be for his family. Meanwhile, Nina and Stan both see opportunities when a the Rezidentura gets an unexpected visitor.
An old comrade visits Elizabeth and Philip, resulting in them embarking on a rogue mission. Meanwhile, tensions increase both at the Rezidentura and the FBI.
After completing their latest mission, Philip's concerns about Elizabeth grow. Meanwhile, Stan receives praise for tracking the KGB walk-in and Paige begins to look into her mother's background.
KGB agent Charles Duluth helps Philip use the early version of the Internet to monitor US government communications. Meanwhile, Nina is drawn closer to Oleg when she discovers she may need to face a lie-detector.
While Philip is busy cleaning up after their last mission and Elizabeth tries to reassure Martha, the couple are assigned a replacement handler. At the KGB, Arkady and Oleg disagree how to handle things and the FBI assigns Stan to find a missing scientist.