SHOCK!!! Kayce Dutton joins the U.S. Marshals — but his past won’t stay buried. The Yellowstone hero faces haunting secrets in Y: Marshals!
That chilling confession from Kayce Dutton (Luke Grimes) sets the tone for Y: Marshals, the highly anticipated Yellowstone spinoff that promises a darker, more psychological journey for the fan-favorite cowboy.
Kayce’s New Path: From Rancher to U.S. Marshal
In the newly released teaser (via Us Weekly), Kayce has left behind the sprawling Dutton ranch for the dangerous frontier of law enforcement. Trading horses for handcuffs, he joins an elite U.S. Marshals task force charged with enforcing “range justice” across Montana.
“I’m changing paths,” Kayce says in the clip. “Trying to find a new beginning.”
According to CBS, the series will explore Kayce’s attempt to reconcile his violent past with his new role as protector. The official logline describes Y: Marshals as following Kayce as he “combines his skills as a cowboy and Navy SEAL to bring justice to Montana, while balancing family, duty, and the psychological cost of being the last line of defense in a lawless land.”
The Cast and Characters
Joining Grimes is an impressive ensemble:
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Arielle Kebbel as Belle, a fiercely loyal deputy marshal.
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Ash Santos as Andrea, the team’s tech and intel specialist.
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Tatanka Means as Miles, a tracker with deep roots in Montana’s native lands.
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Brett Cullen as Harry Gifford, the no-nonsense head of the U.S. Marshals in Montana.
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Logan Marshall-Green rounds out the main cast in an as-yet-undisclosed role.
The blend of new faces and familiar grit promises to deliver a Yellowstone-worthy mix of frontier danger and family drama.
Luke Grimes on Returning to Kayce Dutton
Grimes admitted he thought his time as Kayce was over when Yellowstone wrapped in 2024.
“On the last day of shooting, I thought it was my last day as Kayce,” he told People. “It was seven years of playing a person I thought I’d never see again… It was really emotional — like losing a family.”
But when the Y: Marshals concept was pitched, Grimes was hooked.
“If it was just ‘he’s happy now,’ that’s not very cool,” he said. “The idea they gave me was very good, very interesting — and it really roped me in. I think it’ll do the same for the audience.”
Familiar Faces, New Conflicts
Grimes teased that while Y: Marshals will introduce an entirely new world, viewers can expect cameos from Yellowstone veterans — though he stopped short of confirming who.
“There are going to be some familiar faces and a lot of new ones too,” he shared. “To go back into it in a new set of circumstances is going to be a real transition.”
When Does Y: Marshals Premiere?
CBS has confirmed that Y: Marshals will debut in spring 2026 as a Sunday night midseason replacement at 9 p.m. ET.
The show marks the first Yellowstone spinoff to move to a broadcast network, promising a mix of Western grit, emotional storytelling, and high-stakes action — all centered on Kayce Dutton’s struggle to escape the ghosts of his past.