Searxng/Marshals TV show tv TV Kayce Dutton returns in the CBS spinoff *Marshals*, now a shattered single father and U.S. Marshal investigating Montana crimes after Monica's tragic death. April 26, 2026 AceShowbiz - The new CBS spinoff series Marshals marks the return of Kayce Dutton, originally from the world of Yellowstone, but this time his life is notably different. The show follows Kayce, the youngest son of Kevin Costner's John Dutton, as he becomes part of a U.S. Marshals team investigating crimes across Montana.