Yellowstone Expands Its Universe Once More

The Yellowstone saga isn’t done yet. CBS has officially unveiled the first trailer for Y: Marshals, the highly anticipated spinoff centered on Kayce Dutton (Luke Grimes). The explosive new footage teases a darker, more action-driven chapter in the Yellowstone universe, shifting the focus from ranch life to the dangerous front lines of federal justice.

The series, set to debut sometime in 2026, picks up after the events of Yellowstone Season 5. It’s one of several projects expanding Taylor Sheridan’s Western empire, alongside a separate Paramount+ spinoff focused on Beth Dutton (Kelly Reilly) and Rip Wheeler (Cole Hauser).

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Kayce Dutton’s New Path

In the preview released by Entertainment Tonight, Kayce appears in a bulletproof vest and tactical gear, his trademark calm replaced by raw determination. Having left the Yellowstone Ranch behind, he joins an elite unit of U.S. Marshals in Montana.

The trailer shows flashes of high-stakes shootouts, tense interrogations, and sweeping landscapes that echo the original series’ rugged beauty. Grimes teased that the show will explore the heavy cost of duty and the balance between family and justice.

“Kayce’s trying to do right by his family while fighting for something bigger than himself,” Grimes explained. “But the line between law and survival gets thinner every day.”

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A Familiar Yet Fierce Ensemble

Y: Marshals will feature several returning Yellowstone characters, blending new energy with established favorites.

Confirmed Cast:

• Luke Grimes as Kayce Dutton

• Gil Birmingham as Thomas Rainwater

• Mo Brings Plenty as Mo

• Brecken Merrill as Tate Dutton

• Logan Marshall-Green as Pete Calvin, Kayce’s former military ally

• Arielle Kebbel as Belle, a U.S. Marshal

• Ash Santos as Andrea, a fellow Marshal

• Tatanka Means as Miles, part of Kayce’s tactical team

• Brett Cullen as Harry Gifford, head of the Montana Marshal Division

This mix of new and familiar faces ensures the series stays grounded in the Yellowstone legacy while carving its own identity in a more adrenaline-fueled world.

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A Sheridan Signature Production

Behind the camera, Y: Marshals continues Taylor Sheridan’s storytelling tradition of grit, moral complexity, and authenticity. Sheridan serves as executive producer alongside David C. Glasser, John Linson, Art Linson, Ron Burkle, David Hutkin, Bob Yari, and Grimes himself.

The series will be showrun by Spencer Hudnut, best known for CBS’s SEAL Team, a show praised for its realism and emotional depth. Hudnut’s involvement suggests a similar tone here — grounded, character-driven action that explores the mental and physical sacrifices of service.

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What to Expect

Early reactions to the trailer describe Y: Marshals as “Yellowstone meets SEAL Team” — a blend of rugged Americana and procedural intensity. The spinoff promises a new tone for the franchise, focusing on Kayce’s internal struggle between his past as a cowboy and his present as a lawman.

As the Dutton saga continues to evolve, Y: Marshals could redefine how fans see Kayce — not just as a rancher’s son, but as a man trying to bring justice to a world where right and wrong are rarely clear.

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The Next Frontier for the Yellowstone Universe

With Taylor Sheridan’s world expanding through multiple series — including 1923, 6666, and the upcoming Beth & Rip spinoff — Y: Marshals looks poised to deliver another powerhouse story of loyalty, morality, and survival.

Whether it can match the scale and emotional pull of Yellowstone remains to be seen, but one thing is clear: Kayce Dutton’s fight is far from over.