Following the discovery that a U.S. ambassador is selling classified intelligence to a Colombian cartel, Shepherd devises a plan to catch him that will push Keaton's moral code to the brink. Keaton brings a new member onto the team.

After a major Tal operative escapes CIA custody, Shepherd returns to Langley to help track the fugitive down. Shepherd and Keaton discover the CIA is withholding vital information on Tal, so they spy on the CIA to find out what the agency knows.