
Luke Grimes officially has his first co-star joining him for CBS’ upcoming Yellowstone spinoff, Y: Marshals!
If you don’t know, the series is being branded as a Kayce Dutton-centered spinoff show, with Luke reprising his role.
immediately, we’re learned that Logan Marshall-Green has joined the cast!
Keep reading to find out more…
Logan will play the role of Pete Calvin, “a friend from Kayce’s time in the military,” per Variety.

Here’s the logline for the series: With the Yellowstone Ranch behind him, Dutton joins an elite unit of U.S. Marshals, combining his skills as a cowboy and Navy SEAL to bring range justice to Montana, where he and his teammates must balance family, duty and the high psychological cost that comes with serving as the last line of defense in the region’s war on violence.
The show will be premiering on Sunday nights on CBS, beginning in the mid-season. So expect it sometime in 2026!
Meanwhile, find out who is and is not returning for the Yellowstone Beth Dutton spinoff show.