Luke Grimes, who plays Kayce Dutton in Yellowstone, is no stranger to the spotlight, and his recent endorsement of country star Riley Green’s acting debut in Marshals is stirring up some intrigue. Luke, in a recent interview on SiriusXM The Highway, shared how his suggestion to bring Riley on board was a bit of a gamble. Although it was a bold move, Luke had a specific reason behind it: his belief that Riley’s charisma and rugged looks would fit perfectly into the show.
The collaboration between Luke and Riley began through their shared love of music. While working together on a songwriting session, Riley casually expressed an interest in acting. This was at a time when the Marshals project was just starting to take shape. Luke thought it could be a perfect opportunity for Riley to step into the acting world, especially since the show was beginning to develop a storyline around military characters, including Navy SEALs. Luke was convinced that Riley’s physical appearance and demeanor made him an ideal candidate for the role of a Navy SEAL team member.
Marshals revolves around Luke’s character, Kayce Dutton, as he navigates life as a U.S. Marshal after the events of Yellowstone. Kayce is now raising a son on his own after his wife’s tragic death. Riley portrays Garrett, a troubled former Navy SEAL who seeks out his old teammate, Kayce, in hopes of adjusting to life outside the military. Garrett’s character also has a love for playing the guitar, adding depth to his persona.
Though Luke had already visualized Riley in the role, he couldn’t help but joke about the risks of his suggestion. As a leading man on the show, Luke knew that adding a towering 6’4″ hunk like Riley to the cast could quickly steal the spotlight. “Who wants to stand next to him on screen?” Luke chuckled during the interview, acknowledging the undeniable charm and good looks Riley brings to the screen. Despite this, Luke remained confident in his decision, thinking that Riley’s presence would be a strong asset to the show. He saw it as a perfect opportunity for his friend to transition into a new career path.
It wasn’t just Luke who saw potential in Riley’s acting skills. Marshals showrunner Spencer Hudnut also recognized the star power that Riley brought with him, and together, they created a role that would challenge him while fitting perfectly into the storyline. However, what Luke found amusing was that CBS executives, who weren’t as familiar with Riley’s status in the country music world, didn’t immediately recognize him as a star. This led to an unexpected situation: CBS asked Riley to audition for the role.

Luke couldn’t help but laugh at the thought of Riley auditioning. “You’re going to make Riley Green audition for this?” Luke recalled, half-jokingly. He had already envisioned the role for Riley, and the idea that CBS wanted to ensure Riley could act left Luke both amused and bewildered. Despite his initial surprise, Luke supported his friend through the process, even flying out to Utah to read lines with him during the audition.
Though this was Riley’s first significant acting role, he proved to be more than up to the challenge. Riley, a seasoned performer in the country music world, had never acted before, except for a brief stint in a music video. With no previous acting experience, there were understandable concerns about his ability to step into a dramatic role on a major television production. But Riley rose to the occasion. Luke revealed that Riley performed better than anyone expected, proving that his natural charisma and screen presence translated well to acting. For someone who had never been on a set before, Riley held his own with impressive ease.
In addition to acting, Luke and Riley share a deep bond through their music careers. Luke, who recently released his sophomore album Redbird, has looked up to Riley as both a friend and a mentor. The two have exchanged advice, with Luke admiring Riley’s effortless ability to navigate the entertainment business. According to Luke, Riley never seems nervous in high-pressure situations, and this calm demeanor is something that Luke greatly admires. “There’s a lot to learn there,” Luke said, reflecting on Riley’s ability to maintain his cool despite the spotlight.
As Marshals continues to draw in viewers, with a massive premiere of 9.5 million viewers, the show’s future looks bright. Fans can expect to see Riley’s character in upcoming episodes, adding more excitement to an already popular show. Luke, who is still carving out his own path in the country music industry, is pleased to see his friend succeed in this new endeavor. With the series already promised a second season, it’s clear that both Luke and Riley have a lot to offer in their respective fields.

The dynamic between Luke Grimes and Riley Green on Marshals brings an interesting layer to the show. Despite the risk of rivalry between the two handsome stars, Luke’s endorsement of Riley joining the cast reveals the deep respect and friendship between them. For Luke, this was more than just about giving his friend a chance to shine — it was about recognizing Riley’s potential and knowing that the chemistry between them would make for compelling television. Now, with Riley’s successful debut, it seems like the gamble has paid off for both of them.