Kevin Costner has addressed the future of his Horizon project, and is determined to finish his planned four movie epic whatever it takes. The actor created a commotion when he dropped out of his role as John Dutton in Paramounts Yellowstone ahead of its final episodes, which led to his character being killed off in the opening episode of Season 5B. One of the biggest reasons for his departure was to enable him to work on his own Western project, Horizon An American Saga.