United Kingdom, Feb. 28 -- Luke Grimes was "hesitant" about starring in the Yellowstone spin-off Marshals.

The 42-year-old actor reprises the role of Kayce Dutton in the new CBS series but revealed that he was concerned about ruining his alter ego's "perfect ending" in the original Western drama.

Speaking to Extra, Luke said: "I was kind of hesitant because I just loved the way that Kayce's story ended in the original show... It was a perfect ending and he got everything he'd been fighting for, which is a much simpler light out from under the weight of all these things that has been in his family for years, and he got his life and with his family."

However, the Fifty Shades of Grey actor revealed that he was intrigued by the prospect o...