Logan Marshall-Green is set to join Luke Grimes in 'Yellowstone' spinoff series 'Y: Marshals,' which premieres midseason on CBS.

Luke Grimes is reprising his role as Kayce Dutton on the upcoming Yellowstone spinoff Y:Marshals, but not much else is known about the series. It will air on CBS in 2026, but fans have been waiting on details of the cast. Will any of Kayce's family members, namely wife Monica (Kelsey Asbille) and son Tate (Brecken Merrill) be joining the new show?

Logan Marshall-Green joins the cast of 'Y: Marshals', playing Pete Calvin, a military buddy of Kayce Dutton. 'Y: Marshals' will star Luke Grimes, who will reprise his role as Kayce Dutton, now part of a specialized U.S. Marshals unit in Montana. The show is scheduled to air mid-season 2025–2026 on CBS, Sunday nights.