Yellowstone may be over after its finale season came to a close, but new behind-the-scenes details of Paramount's smash hit series continue to be revealed. One week after The Hollywood Reporter published an exposé on the show, Us Weekly is learning new details about the workplace dynamics between Kevin Costner and cocreator Taylor Sheridan. "Obviously, when Yellowstone first began, it was Kevin's show," a source exclusively shared with Us. "He was the major star and the draw, and everyone knew that.