General · EdgepediaOctober 3, 20265 min read

Trinity (TV series)

Trinity is an upcoming American political thriller television series created by Jed Mercurio for Netflix, starring Gugu Mbatha-Raw as a naval officer whose relationship with the US Secretary of Defense draws her into a conspiracy.¹ The eight-episode first season is produced by 20th Television and Mercurio's banner Hat Trick Mercurio Productions, and it reunites Mercurio with Richard Madden, who starred in the creator's earlier BBC thriller Bodyguard.²^•³

Key fact	Detail
Format	Eight-episode political thriller for Netflix; genres listed as political, drama, and thriller series¹^•⁴
Creator	Jed Mercurio, showrunner, writer, and executive producer, known for Line of Duty, Bodyguard, and Trigger Point²
Leads	Gugu Mbatha-Raw as Commander Katherine Decker; Richard Madden as Secretary of Defense Webb Preston¹
Premise	As geopolitical tensions escalate toward crisis, a heroic female naval officer becomes involved with the outwardly charismatic Secretary of Defense, only to discover he may be at the heart of a dangerous conspiracy¹
Production	20th Television with Hat Trick Mercurio; filmed at North Shore Studios, Vancouver, from July 7, 2025, on a four-month shoot scheduled to wrap November 5, 2025²
Release	Netflix lists the series as a 2026 title; no official premiere date has been announced⁴

Spoilers

Premise

According to the official logline, amid rising geopolitical tensions, a heroic female naval officer gets entangled with the Secretary of Defense, whose outward charisma masks the possibility that he sits at the center of a dangerous conspiracy.¹^•² The two lead characters anchor the story: Commander Katherine Decker (Mbatha-Raw) serves as second-in-command on the USS Kansas, a nuclear submarine described in official materials as one of the deadliest weapons on Earth, while Webb Preston (Madden) is a defense secretary whose technology background sets him apart from most politicians, with his innovation and purpose seen as a threat in more ways than one.¹ The Royal Television Society's account adds that Preston is a charismatic, crusading defense secretary whose drive for innovation has Westminster worried, and that Decker discovers there may be more to him than meets the eye.³

Cast

Netflix announced Mbatha-Raw and Madden as leads on June 24, 2025, and unveiled the fuller cast on July 11, 2025.¹^•² The announced cast and roles are:

Gugu Mbatha-Raw as Commander Katherine Decker, second-in-command on the USS Kansas¹
Richard Madden as Secretary of Defense Webb Preston¹
Marcia Gay Harden as Margaret Vandenburg, CEO and matriarch of the Vandenburg business empire, instrumental in her prominent family amassing significant political ties¹
JD Pardo as Tom Reyes, a lieutenant commander in the US Navy¹
Bruce Greenwood as Special Agent Eric Colby¹
Robert Wisdom as Admiral Griff Tatum¹
Kirk Acevedo as Captain Jock Campbell¹
Ben Cotton as Special Agent Jake Ryan¹
James Remar as President Paul Barnard¹
Jason Ralph as Brooks Vandenburg¹
Mark O'Brien as Dr. Brian York¹

The seven actors from Greenwood through O'Brien were reported as recurring roles joining the leads already announced.⁵ In February 2026, Mike Dopud was added in a recurring role as US Navy Commander Chief Waylon Kelly.⁶ IMDb also credits Brian Markinson as Aaron Feldman.⁷

Production

Mercurio leads the project as showrunner, writer, and executive producer, producing under Hat Trick Mercurio Productions, with Jimmy Mulville and Wendy Mericle as executive producers.¹^•² Michael Cuesta, whose credits include Homeland and Daredevil: Born Again, directs and executive produces the first two episodes, and Loren Yaconelli was also reported on board to direct.² IMDb credits Maja Vrvilo with directing two episodes as well.⁸

Filming took place in Vancouver, British Columbia, at North Shore Studios, beginning July 7, 2025, with a four-month shoot scheduled to wrap on November 5, 2025; What's on Netflix reported filming completed in late October 2025.²^•⁹ IMDb credits list a separate Washington, DC unit, with Erin Charles as line producer for the DC unit on three episodes.⁸ Casting directors are Corinne Clark, Jennifer Page, and Julie Tucker.²

Release

Netflix has not announced an official premiere date. Its own title page lists Trinity as a 2026 release in the political, drama, and thriller genres.⁴ Third-party listings disagree on timing: one episode guide lists a July 16, 2026 premiere date, another lists an October 2026 start, and a Netflix tracking service reported that a planned July 2026 release was delayed with the date unconfirmed.¹⁰^•¹¹^•¹² What's on Netflix reported in 2026 that the completed season was still awaiting release, possibly aiming for later in the year.¹³

The series sits in a Netflix lane of political thrillers that includes The Diplomat and Zero Day, and it follows Bodyguard, the 2018 Mercurio-Madden collaboration that became one of the biggest UK dramas Netflix has carried internationally.¹⁴^•¹³

References

Topic: Encyclopedia › Arts and culture › Screen and stage › Film and television › Series and fictional screen worlds › Scripted television and comedy series › Drama and prestige series (individual series) › Crime and thriller series › Spy and political thrillers

Initially written Oct 3, 2026 · Reviewed: Oct 3, 2026; Oct 25, 2026 · Edited: Oct 3, 2026; Oct 25, 2026; Nov 1, 2026 · Last review: Oct 25, 2026

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