TMDb/Marshals TV Kayce Dutton joins a U.S. Marshal to uncover a sex trafficking ring in the gripping Yellowstone spinoff Marshals, airing March 29 on CBS. May 4, 2026 AceShowbiz - The latest installment in the Yellowstone universe, the spinoff series Marshals, dives into a harrowing sex trafficking investigation led by Luke Grimes' character, Kayce Dutton. In the March 29 episode airing on CBS, Kayce teams up with fellow U.S. Marshal Miles, played by Tatanka Means, to uncover a disturbing trafficking network affecting women from the Reservation.