Kelsey Asbille and Luke Grimes -- who play Monica and Kayce Dutton -- say that starring in the contemporary western, Yellowstone, has changed everything for them personally and professionally. "I think,

Yellowstone' star Luke Grimes paid tribute to his time playing Kayce Dutton in honor of the show's series finale on5.

But at the end of the day, it’s Luke Grimes, the 40-year-old actor who plays Kayce (pronounced “Casey”) Dutton, the youngest son of John (Costner) and his late wife Evelyn, who’s proven to be the most vital piece of the series.

"Yellowstone," the hit Paramount Network show, officially ended with its series finale Sunday. So what's next for Ohio native Luke Grimes, who has played Kayce Dutton on the show since season 1 in 2018?