The star of Bodyguard Richard Madden, also recognized for his stint in Game of Thrones, and BAFTA-nominated Gugu Mbatha-Raw, whom you’ll recall from The Morning Show and Loki, headline Netflix’s new political thriller Trinity, for which the official trailer has just been released ahead of its premiere on December 1, 2026. The series, from the same Jed Mercurio behind the acclaimed Line of Duty and Bodyguard, follows a naval officer who begins a romance with a powerful man and discovers that he could lie at the heart of a dangerous conspiracy.
Trinity: Plot of the TV Series Starring Richard Madden and Gugu Mbatha-Raw
Trinity blends political intrigue, military tensions, government secrets, nuclear weapons, and a dangerous romance. The story centers on Katherine Decker (Mbatha-Raw), a Navy commander who serves as second-in-command aboard the USS Kansas, a nuclear submarine. During a military operation, the crew comes close to an accidental launch of a nuclear weapon, triggered by a threat that turns out to be fictitious. The event raises unsettling questions about the security of military systems and the possibility that someone might be manipulating strategic information.
Into the mix enters Webb Preston (Madden), the charismatic U.S. Secretary of Defense, with a background in technology and a covert project named Trinity. A personal bond develops between him and Katherine, pulling her deeper into a web of political machinations. The program is pitched as a means to prevent a third world war, but the commander begins to suspect that Preston harbors a hidden agenda and could pose a threat rather than a safeguard. Katherine thus faces the difficult dilemma of supporting the man who could save the world or exposing him before it is too late.
The first season, seven episodes long, also features Marcia Gay Harden (The Morning Show) as Margaret Vandenburg, a formidable woman who runs an economic empire and maintains significant connections to the political arena, and JD Pardo (Mayans M.C.) as Tom Reyes, a naval officer involved in the events. The cast also includes James Remar (Dexter: Resurrection), Bruce Greenwood (The Resident), Kirk Acevedo (Fringe) and Brian Markinson (Continuum), among others.
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