This character-driven investigative thriller set in the world of counterintelligence focuses on former CIA agent Erica Shepherd (Jennifer Carpenter), now known as one of the most notorious traitors in recent American history. Shepherd is brought out of a federal Supermax prison by FBI Agent Will Keaton (Morris Chestnut) to help stop some of the most dangerous acts of espionage threatening the United States today. Also starring Raza Jaffrey, Kelli Garner and Noah Mills.

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

Following the discovery that a U.S. ambassador is selling classified intelligence to a Colombian cartel, Shepherd (Jennifer Carpenter) devises a plan to catch him that will push Keaton's (Morris Chestnut) moral code to the brink. Keaton brings a new member (Cassandra Freeman) on to the team.

When intelligence obtained by Shepherd during her stint at the notorious ADMAX prison is linked to a pending attack on U.S. soil, Keaton and the Cointel team embark on a manhunt to find and stop a deadly international operative. Keaton confronts questions of loyalty and betrayal when it comes to Anna Cruz (guest star Coral Peña) and his late fiancée's father, Thomas Heffron (guest star Robert Gossett).

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 (guest star Rudy Roushdi), 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.