Horizon: An American Saga - Chapter 12024-3h 2min 6.9 / 10 508In 1859, families discover the lure of the Old West as they settle in territories from Wyoming to Kansas. Meanwhile, a gruff cowboy soon finds himself on the run with a prostitute and a young boy after killing a fellow gunman.WesternDramaDirected by Kevin CostnerWriters Kevin Costner Jon Baird Mark KasdanStars Kevin Costner Sienna Miller Sam WorthingtonWATCH TRAILER