After reports rumbled of spinning off the hit franchise under the Paramount umbrella following the Yellowstone finale, CBS officially ordered Y: Marshals, which will see flagship star Luke Grimes reprising his role as Kayce Dutton.
The son to the deceased John Dutton (Costner) was given a satisfactory yet open-ended season 5B finale ending when the Montana Livestock Commissioner finally figured out how to free himself of his father’s legacy while giving his own family a future. Wife Monica Dutton (Kelsey Asbille) has not been confirmed among the cast; but their son Tate (Brecken Merrill) also star in the series, along with Yellowstone stars Gil Birmingham and Mo Brings Plenty reprising their roles as Chief Rainwater and Mo, respectively. (The latter is the Native affairs coordinator on several series in the franchise.)
Logan Marshall-Green has joined the cast as newcomer Pete Calvin, a friend from Kayce’s military service, along with Arielle Kebbel, Ash Santos, Tatanka Means and Brett Cullen.
Y: Marshals will premiere on CBS in spring 2026 and, per the logline, will see Kayce joining an “elite unit of U.S. Marshals, combining his skills as a cowboy and Navy SEAL to bring range justice to Montana.”
Spencer Hudnut (SEAL Team) is showrunner on the MTV Entertainment Studios and 101 Studios spinoff series and is executive producing with Sheridan, John Linson, Art Linson, Grimes, Ron Burkle, David Hutkin and Bob Yari.
Why Would a Kayce Dutton Show Work?
Kayce has always been one of the most fascinating Duttons — a Navy SEAL turned rancher turned reluctant Livestock Commissioner who never quite knew where he belonged. Every time he got close to peace with Monica and Tate, something would drag him back into chaos. Now that John Dutton’s gone and the fight for the ranch is over, this spin-off finally has a chance to put Kayce front and centre with a purpose.
And CBS might be the perfect home for this next chapter. A procedural set in the American West feels fresh — think Longmire, but with a Yellowstone edge. It’s a chance to ground the show in weekly storytelling, give Kayce more agency, and carve out a whole new lane for the franchise that isn’t about cattle brands or broken fences.
