Philip and Elizabeth are finally assigned a new handler as Philip works to clean up the mess of the last operation and Elizabeth, in disguise as Clark's sister Jennifer, does her best to smooth things over with Martha. As Stan searches for a missing scientist, Oleg and Arkady continue to argue over how best to handle the situation on their side, leaving Nina once again caught between the FBI and KGB.

Martha and Clark’s marriage meets its most challenging test yet. As pressures on Philip intensify, Elizabeth turns to Gabriel with a difficult request. Nina receives a new assignment that reconnects her with her past.

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

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.

In the aftermath of a disastrous operation, Philip and Elizabeth clash about how to handle things with Paige. Stan struggles to contain the growing risks of Sofia and Gennadi's fraying relationship.