Danger mounts for Elizabeth and Philip as they get closer to the inner circle of the C.I.A. Afghan Group. Stan monitors Zinaida. Agent Aderholt challenges Agent Gaad on a crucial operation. Arkady tasks Oleg and Tatiana with gathering high--‐level intel. Martha proposes a lifestyle change to Clark.

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.

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?

Philip must consider his life with Martha and make a crushing choice from which there is no coming back.

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

Philip and Elizabeth receive surprising news about Henry -- and shattering news about a past operation. Stan might be falling in love, but Philip wonders if something darker is going on.

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.