Kevin Costner, the star of "Yellowstone," walked out mid-filming of season five, demanding more money and creative control. But could Taylor Sheridan, the show's creator, be retaliating by killing off John Dutton in the very first episode of the finale? Fans are speculating that the unexpected death of John could pave the way for a new generation of Duttons to take over the ranch, with Casey, Beth, Jamie, or even Tate inheriting the legacy. Let's watch the video to see what theories fans are putting forward for the series finale!