Alex goes undercover with a military contractor who is believed to have struck a deadly deal with another country.
Quinn begins to investigate the mysterious watchers across the street while Carrie tries to manage her role with the incoming president and Saul seeks out an old acquaintance.
Conor Devlin plots revenge and returns to his home country of Ireland, as the team unknowingly becomes a pawn in his plans.
Carrie and Reda fight for their client as Quinn chafes at his new life. Saul and Dar suspect that Keane is keeping a secret.
Carrie and Saul confront Keane with their findings as Quin follows a perilous path to learn more about his situation.
