Netflix released the official trailer for Trinity on Tuesday, November 4, 2026, reuniting Richard Madden with Jed Mercurio, the creator of Bodyguard and Line of Duty.
The series premieres on Netflix on Tuesday, December 1, 2026, with all episodes available at launch. Madden plays US Secretary of Defense Webb Preston, and Gugu Mbatha-Raw plays Commander Katherine Decker, second-in-command aboard the nuclear submarine USS Kansas.
Mercurio created, wrote and executive-produced the series, reuniting with Madden after Bodyguard (2018) made the actor a global star. The story follows Decker as she becomes involved with Preston and discovers he may be at the heart of a dangerous conspiracy around a top-secret programme code-named Trinity.
The cast also includes Marcia Gay Harden, JD Pardo, Bruce Greenwood, Robert Wisdom, Kirk Acevedo, Ben Cotton, James Remar, Jason Ralph and Mark O’Brien.
With Mercurio’s track record for twist-heavy thrillers and Madden back in a role built for him, Trinity is shaping up as one of Netflix’s biggest December launches.
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Bhudev Bhagaliya is an experienced and senior journalist who has carved a distinct niche for himself in the world of Hindi journalism through his profound understanding and precise writing style. With over two decades of experience in the field of journalism, he has held key responsibilities at Dainik Hindustan for 12 years and at Amar Ujala for one year. Currently, he serves as the Content Editor for the Jagrook Youth News newspaper and portal, where he plays a crucial role in ensuring the quality and credibility of the news content. Bhudev Bhagaliya consistently writes about issues that help raise awareness within society and among the younger generation.