Will Kevin Costner Appear on ‘Y: Marshals,’ the ‘Yellowstone’ Kayce Dutton Spinoff?

John Dutton is dead in the Yellowstone universe, but fans still wonder whether Kevin Costner might reappear in flashbacks in Y: Marshals — the upcoming CBS spinoff centered on Kayce Dutton. The new project expands Taylor Sheridan’s world of ranch life and law enforcement, continuing the legacy of the Dutton family through the perspective of Kayce, played by Luke Grimes.

What We Know About Kevin Costner’s Return

Although Costner’s character, John Dutton, met his end in the main timeline, producers have not ruled out the possibility of flashbacks. In an interview, a production source noted that “flashbacks remain a hallmark of the Yellowstone storytelling style,” leaving open the door for appearances by Costner or a younger actor portraying Dutton.

The Focus of ‘Y: Marshals’

Y: Marshals is said to follow Kayce Dutton as he transitions from ranch life to federal law enforcement, balancing his sense of duty with family loyalty. The series aims to blend modern western themes with a procedural drama framework — something new for Sheridan’s Yellowstone universe, which has so far focused on ranch politics and territorial conflict.

Costner’s Current Projects

Meanwhile, Costner is occupied with his ambitious western film series, Horizon: An American Saga. His ongoing commitments make a steady television return unlikely, though a cameo remains within reach if schedules align and the script demands it.

What Fans Can Expect

For now, CBS and Sheridan’s team have kept casting updates tight-lipped. Fans should expect more teasers as production advances in 2026. With Yellowstone’s closing chapters still fresh in viewers’ minds, any return by Costner would undoubtedly spark excitement and nostalgia across the show’s fan base.

“The Yellowstone world isn’t done telling stories about family, land, and legacy,” said Sheridan during a panel earlier this year.

Author’s summary: Kevin Costner’s John Dutton may appear in Y: Marshals via flashbacks, but his busy schedule and the show’s new focus make a full return doubtful.

Mountain Democrat — 2025-11-27