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.

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.

As Philip and Elizabeth grapple with a momentous decision, Tuan takes matters into his own hands in the Morozov operation. Back in Russia, Oleg’s investigation collides with the realities of the Soviet system.