Luke Grimes is reprising his role as Kayce Dutton in a CBS spinoff with a stacked cast - but who's new to Marshals and who originally appeared on Yellowstone? Viewers were introduced to Kayce when the Dutton family took center stage on Paramount+'s Yellowstone, which aired from 2018 to 2025. After the show came to an end, Grimes reflected on wrapping up the role of Kayce. "On the last day of shooting, I thought it was my last day as Kayce. It was over to me," Grimes recalled in an interview with People in June 2025.