Yellowstone Spinoff Y: Marshals Stars Luke Grimes Premieres Spring 2026

The upcoming Yellowstone spinoff Y: Marshals, premiering on CBS in mid-2026, follows Kayce Dutton as he embarks on a new career as a U.S. Marshal, leveraging his skills as a cowboy and Navy SEAL to deliver justice in Montana. Luke Grimes reprises his role as Kayce, who is seen in the teaser trailer riding horseback and chasing vehicles, signaling his transition from ranch life to law enforcement. The series explores the challenges Kayce faces balancing family, duty, and the psychological toll of serving as the last line of defense in a violent region. Returning Yellowstone cast members include Gil Birmingham, Brecken Merrill, and Mo Brings Plenty, while new additions such as Logan Marshall-Green and Brett Cullen join as fellow marshals, with Cullen playing Harry Gifford, head of the U.S. Marshals in Montana. The show is part of a broader Yellowstone universe expansion, with other spinoffs focusing on characters like Beth Dutton and Rip Wheeler, though no crossover details have been announced. Fans have expressed enthusiasm for the series, eager to see more of Kayce's storyline unfold after the original show’s dramatic conclusion.