Luke Grimes returns as Kayce Dutton in thrilling new Yellowstone spinoff Y: Marshals.

The Yellowstone universe is far from finished, and now it’s official—Luke Grimes is saddling up once again as Kayce Dutton in the newly announced spinoff, Y: Marshals. For fans who feared that Yellowstone’s ending might close the book on Kayce’s journey, this casting confirmation is nothing short of a dream come true. The news sets the stage for a gritty, high-stakes continuation of the Dutton legacy, one that promises to blend law enforcement drama with the iconic Western spirit that made the franchise a global hit.

The series, tentatively titled Y: Marshals, will reportedly follow Kayce Dutton as he transitions from ranch life into a role as a U.S. Marshal, tasked with hunting down fugitives across the rugged American West. For a man whose life has always been defined by conflict, loyalty, and survival, Kayce is the perfect fit for such a dangerous role. This shift also reflects his personal journey—moving away from the chaos of the Yellowstone ranch while still carrying its moral code and unyielding toughness into every decision he makes.

What excites fans most is the potential to see Kayce’s layered personality thrive in this new environment. Unlike his father John Dutton, whose battles were tied to land and legacy, Kayce’s struggles have always been rooted in justice, family, and reconciling his violent past. As a Marshal, those themes can explode in fresh ways, pitting him against ruthless criminals while forcing him to balance the law with his own personal sense of right and wrong.

The tone of Y: Marshals is expected to be darker, grittier, and more action-driven than Yellowstone. Shootouts, manhunts, and tense standoffs will likely dominate, but at the heart of it will still be Kayce’s vulnerability—a man torn between protecting his family and serving the law. Rumors suggest familiar faces from Yellowstone could make appearances, while new allies and enemies will be introduced to push Kayce to his limits.

Luke Grimes’ return has already electrified the fandom, with many calling Kayce one of the most beloved and tragic characters of the franchise. His evolution from a conflicted soldier to a family man and now to a Marshal ensures fans will get to see him in an entirely new light, yet still tied to the core themes that make the Yellowstone universe so powerful.

The spinoff also represents a major expansion of Taylor Sheridan’s empire. With 1883, 1923, and the upcoming 1944 building out the Dutton past, Y: Marshals looks to carry the saga forward into new terrain—one where the Dutton name still carries weight, but justice, duty, and survival define the story.

Whether Kayce can survive the harsh realities of being a Marshal is yet to be seen, but one thing is certain: Luke Grimes’ return guarantees that Y: Marshals will be a must-watch for Yellowstone fans hungry for more.