Yellowstone spin-off adds three huge names from original drama - with one major character missing

Yellowstone's forthcoming spin-off, focusing on Kayce Dutton (played by Luke Grimes), is set to feature at least three more big names from the original series.

Y: Marshals will follow the son of ranch owner John Dutton (Kevin Costner) in the aftermath of his father's death as he leaves the ranch to combat crime across Montana.

Deadline has now revealed that Yellowstone veterans Gil Birmingham, Brecken Merrill and Mo Brings Plenty will be reprising their roles from the main show.

Birmingham played Chief Thomas Rainwater, who had a feud with the Duttons over disputed land, while Brings Plenty played Rainwater's driver and right-hand man, Mo.

Meanwhile, Merrill played Kayce's son Tate alongside Kelsey Asbille as wife and mother Monica Dutton.

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It's not yet known if Asbille will be returning, though Deadline suggests her absence may be explained within the series.

In addition to these three Yellowstone favourites, Y: Marshals has confirmed four more cast members joining Grimes and the previously announced Logan Marshall-Green.

Arielle Kebbel (Rescue: HI-Surf), Ash Santos (Pulse) and Tatanka Means (Reservation Dogs) are on board as series regulars.

They'll be playing members of the US Marshals Belle, Andrea and Miles, respectively. Finally, The West Wing and Lost star Brett Cullen will take on a recurring role as Montana's head of US Marshals, Harry Gifford, reports the Express.

The exact storyline for the upcoming Yellowstone spin-off is being kept under wraps, but a series synopsis has given fans a taste of what's to come.

According to Deadline, it states: "In Y: Marshals, with the Yellowstone Ranch behind him, Kayce Dutton (Grimes) 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."

In other news, Oscar-nominated actress Annette Bening has been confirmed to join another Yellowstone spin-off.

She'll be taking on the role of Beulah Jackson, the boss of a competing ranch, in the tentatively named The Dutton Ranch, which will carry on the tale of Beth Dutton (Kelly Reilly) and Rip Wheeler (Cole Hauser).

Y: Marshals will premiere in late 2025 - early 2026 on CBS. Yellowstone is available to stream on Paramount+.