As Sandy conducts her review of the agency's spycraft, she and Jeanne continue to clash. When a potential asset contacts the CIA claiming to have vital information about a communications breach, Sandy has her doubts about the man known as GTPROLOGUE. Could this be part of a larger campaign by the Soviets to obfuscate the truth? Meanwhile, Ames learns that his request for a transfer to Rome has been approved.

Having put aside their differences, Sandy and Jeanne move full steam ahead with their mole hunt. The investigation experiences a serious setback, though, when Sandy learns that General Polyakov has been compromised. Through sound recordings, Sandy experiences the brutal interrogation of Polyakov who remains heroic to the end. As Sandy deals with her devastating loss, Ames prepares himself for a high-stakes polygraph test.