Trinity on Netflix: Release date confirmed for new Jed Mercurio thriller starring Bodyguard's Richard Madden
Richard Madden and Jed Mercurio reunited? Hell, yes!
Trinity is the latest thriller from mastermind Jed Mercurio, and this time the Line of Duty creator is bringing us a political thriller on Netflix.
One of TV’s most successful writers, Jed now returns to his happy place for a new action-packed eight-parter full of twists and turns.
Trinity transports viewers into a “world of political intrigue, deep secrets, and shocking revelations”. It’s also a story with a timely edge, as Mercurio weaves in elements of world-controlling conspiracies. Sound familiar?
Leading the cast are Richard Madden and Gugu Mbatha-Raw, two Brits playing Americans! Richard’s fans will know he previously worked with Jed Mercurio on his 2018 hit political thriller Bodyguard. Meanwhile, Gugu recently appeared in the thrillers Surface, and Possession.
Keep reading for everything we know about Trinity, including its plot, cast, and start date on Netflix.
What’s the plot of new Netflix series Trinity?
The stakes are high in the new Netflix drama Trinity. Jed Mercurio’s story looks at a bond between a high-power naval officer and an equally-influential politician.
A dedicated Naval Officer’s life takes an “unexpected turn” when her connection to the Secretary of Defense leads her into a web of “political intrigue and potential conspiracy”.
As the pair’s relationship grows, it becomes clear that things aren’t quite as straightforward as they first appeared.
“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 conspiracy,” explains the official Netflix synopsis.
Gugu Mbatha-Raw and Richard Madden will star in TRINITY. A new high stakes drama thriller series from the creator of Bodyguard.
A heroic Naval Officer becomes involved with the charismatic Secretary of Defense, only to discover he may be at the heart of a dangerous conspiracy. pic.twitter.com/0Cm9dRxtUm
— Netflix (@netflix) June 24, 2025
Who is in the cast?
Gugu Mbatha-Raw will play Commander Katherine Decker. She’s second in command on the USS Kansas, which is “a nuclear submarine and one of the deadliest weapons on Earth”.
Marvel fans will know her best as Ravonna Renslayer in Loki. But she’s also appeared in the much-loved San Junipero episode of Black Mirror, and episodes of Doctor Who. The actress returned to the Who-universe for the 2025 spin-off series The War Between The Land of the Sea.
In 2021, she played the leading role of Jane in the tense BBC thriller The Girl Before. She’s since made a name for herself in several thrillers, including Possession, and Surface.
Meanwhile, Richard Madden plays Secretary of Defence Webb Preston. Described as highly charismatic (obvs), his technical expertise sets him apart from most other politicians. However, Netflix teases that his “innovation and purpose are seen as a threat in more ways than one”.
Game of Thrones fans will know Richard best for playing Robb Stark. However, he’s since appeared in several high profile movies including the 2019 Elton John biopic Rocketman, and Marvel’s 2021 feature Eternals. In 2023, he appeared in Prime Video’s action thriller Citadel alongside Priyanka Chopra, a role he reprised in the 2026 sequel.
Trinity will reunite the actor with Mercurio after the pair worked together on BBC One thriller Bodyguard in 2018.
The ensemble cast also includes So Help Me Todd’s Marcia Gay Harden as Margaret Vandenburg.
How many episodes is Trinity on Netflix?
Netflix has confirmed that there will be eight-episodes of Trinity. Each episode will be around an hour.
Showrunner Jed Mercurio has written the entire series, while Michael Cuesta will executive produce the show and direct episodes one and two. His previous work includes instalments of Homeland, Dexter and most recently, Daredevil: Born Again for Disney+.
When is it released?
Netflix has now confirmed the release date for Trinity will be Tuesday, December 01, 2026.
As is always the case with Netflix original series, it will drop as a boxset on that day.
