When a former CIA operative is murdered, Keaton enlists Shepherd to help recover valuable intel that could take down Tal once and for all. But the question remains, can Shepherd be trusted?

Once Shepherd convinces Keaton that Anna Cruz is a mole inside the FBI working for Tal, Keaton decides to keep his enemies close. With a fox in their henhouse, Keaton and the team spy on one of their own, hoping Cruz will lead them to Tal.

After a bomb explodes in Jersey City, the Cointel team captures a key planner, Sam Fathi, who can lead them to Tal, the mastermind behind the bombing. When Sam proves difficult to break, Shepherd convinces Keaton to detain a former Egyptian intelligence officer to help, leading to an urgent mission to stop another bomb from going off.

Flashbacks to the past reveal the fateful events that led CIA Deputy Director Erica Shepherd to betray her country and the ensuing investigation that put her on a collision course with Will Keaton.

When a group of contractors working for the CIA is murdered, Keaton and the team discover the CIA is keeping secrets from the FBI regarding Tal. Shepherd's ex-husband finds out that Hannah has been lying and visiting Shepherd.

When a highly sophisticated Tal operative evades FBI custody and flees to the Swiss embassy, the Cointel team must go under cover. What begins as a smooth counterintelligence operation quickly devolves into a tense hostage situation.

Keaton and his team are able to intervene and stop the assassination of a high-profile congresswoman; Shepherd interrogates the congresswoman, who had previously used Shepherd's treason conviction as a launching pad for her political career.