Release date, cast, plot, and more

Kevin Costner’s John Dutton may have moseyed on into the sunset. But the Yellowstone patriarch’s spirit still lingers over the series’ various spinoffs, one of which is mere months away from debuting.

The upcoming Y: Marshals — no relation to Y: The Last Man — will center on Luke Grimes’ Kayce Dutton, John’s youngest son. Yellowstone’s fifth and final season ended with Kayce selling off a large portion of the ranch. And, as its title implies, the spinoff will see him stepping into a new career as a U.S. marshal.

Yellowstone creator Taylor Sheridan will serve as executive producer, as will SEAL Team veteran Spencer Hudnut, who will take the reins as showrunner.

So, when is Y: Marshals premiering? And who’s in the cast? Read on as we answer these questions and more.

What is Y: Marshals about?

According to the show’s official logline, Y: Marshals will find Kayce Dutton joining “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.”

Is it really called Y: Marshals?

It could be, but Paramount has made it clear that Y: Marshals is a working title.

Who’s in the cast of Y: Marshals?

Paramount has yet to reveal the full cast of Y: Marshals, but with Grimes leading the series as Kayce, it’s likely we’ll also see his wife, Monica, as played by Kelsey Asbille.

While that remains to be seen, Entertainment Weekly confirmed in August that Logan Marshall-Green would join the cast alongside Grimes. The actor will play Pete Calvin, a military veteran whom Kayce befriended during his time in the Navy SEALs.

Marshall-Green has been acting onscreen for more than two decades now, with early turns in films like The Invitation (2015) and Upgrade (2018) giving way to leading roles on series such as Big Sky (2021–2022) and And Just Like That (2025). Next up for Marshall-Green is a supporting role in Christopher Nolan’s The Odyssey.

How many episodes will there be of Y: Marshals?

Y: Marshals was given a 13-episode run by CBS.

Is there a Y: Marshals release date?

Y: Marshals will premiere midway through CBS’s 2025-2026 broadcast season. As of now, episodes are slated to air on Sunday nights at 9 p.m. ET.

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