Citadel

In the series premiere, Mason Kane and Nadia Sinh – top agents of the independent spy organization Citadel – collide with a nefarious, new syndicate – Manticore – leading to catastrophe. Eight years later, Mason Kane is living a quiet life as "Kyle Conroy," with no memory of his past. Until one day an old colleague enlists his help to stop a now powerful Manticore from creating a new world order.

Kyle and Bernard journey to New York City to steal the Citadel X Case from Manticore Headquarters before it's too late. Later, Kyle learns that a figure from his past is still alive and he risks everything to find them.

As Kyle and Nadia land at an old safehouse, small clues about their past life together bubble to the surface. Soon, they discover a former ally who may be key to stopping Manticore is imprisoned in a facility in Morocco. In order to rescue him they first have to enlist the help of a local crime boss. But their mission is compromised as secrets of the past are unearthed.

After the shocking revelation of Abby's former identity, we learn of the past entanglements between Mason, Nadia and Celeste, and a horrific decision that reverberates still today. Meanwhile, Nadia and Kyle land at the Manticore compound in Morocco and risk their lives to free their fellow spy. But their hero's welcome is short-lived as they are forced to grapple with a dangerous accusation.

Nadia, Kyle and Carter are forced to work together to escape from Manticore and protect the X Case, but suspicion of one of our heroes reaches a boiling point, leading to an explosive reckoning.

In the epic conclusion to the season, with one of their own being held hostage by Manticore, Kyle, Nadia and Carter risk everything to save them and thwart Manticore's plans to acquire nuclear weapons. As our heroes grapple with the nuclear threat, the identity of the mole within Citadel will be revealed, as will the awful truth that everything they know is a lie.

Mason, Nadia, and Bernard hide across Europe after Season 1's events. While Mason battles identity issues and Nadia flees with her daughter from operative Aparna, Bernard allies with ex-CIA Agent Hutch to stop Paulo Braga. A secret emerges when Nadia faces Frank Sharpe.

Abby's escape triggers deadly events as Mason fights Manticore assassins. Paulo and Joana advance their weapon while pursuing Mason. Bernard and Hutch race to reunite the group. After a violent clash with Nadia, Mason seeks help from an old enemy and uncovers Bernard's dark secret.

As Paulo's plan accelerates, Mason and Nadia are forced into an uneasy alliance. Together with Bernard, Hutch, Celine, and Frank Sharpe, they mount a daring mission to uncover the identity of a mysterious hacker who is key to stopping a global catastrophe.

After extracting Edison's true identity, the team pivots to a high-profile gala where their target is expected to appear. But as tensions between Mason and Nadia reach a breaking point and enemies close in, a rogue decision threatens to upend the entire mission.

Mason and Dahlia set a high-stakes prisoner exchange in motion to negotiate for Abby's release. But as Mason's unraveling threatens to derail the plan, both sides race to execute the trade, leading to a shocking revelation from Abby that changes everything.

As Joana accelerates the plan to assassinate the Russian President at the G8 Summit, Mason and Nadia take Abby to a safehouse in Scotland. But when they uncover the horrific truth about what was done to Abby, it triggers a devastating chain of events.

Citadel agents race to prevent Joana's assassination of President Aronov at the G8 Summit, where she plans to seize control of Russian satellites. The team must execute a dangerous infiltration mission and face impossible and deadly choices in a final confrontation.