Horizon: An American Saga is set to be a four-installment Western American epic created by Yellowstone star Kevin Costner and Jon Baird. A dream project for the former, the series will be set around the American Civil War and was first envisaged by Costner in 1988.The official synopsis, according to IMDb, states the following:“Chronicles a multi-faceted, 15-year span of pre-and post-Civil War expansion and settlement of the American west.”Horizon: An American Saga spent years under development and was initially pitched as a single movie narrative. However, with Costner taking over directorial and producer duties in January 2022, it was converted into a series with two of the four movies already produced. This article looks at the impressive cast for Horizon: An American Saga, which initially premiered at the 77th Cannes Film Festival.The main cast of Horizon: An American Saga1) Kevin Costner as Hayes Ellison View this post on Instagram Instagram PostFirst and foremost, the acclaimed Kevin Costner is not only directing the movie but is also starring as the protagonist. Costner takes up the role of Hayes Ellison, and the project is set to add to a career that has already seen him play several iconic roles.Previously seen in movies such as The Untouchables, Dance with Wolves, and Robin Hood: Prince of Thieves, Costner has also been part of Man of Steel and Justice League and has, in recent years, garnered much acclaim for his work in Yellowstone.2) Sienna Miller as Frances Kittredge View this post on Instagram Instagram PostSienna Miller is also a prominent face who has previously worked in movies such as American Sniper and Layer Cake. Miller’s character in Horizon: An American Saga is that of Frances Kittredge, as she adds to a stellar career that has seen her work in multiple major movies and TV series.Miller appeared as herself in Curb Your Enthusiasm and has worked in movies such as G.I. Joe: The Rise of Cobra, Just Like a Woman, and North Star. 3) Sam Worthington as First Lt. Trent Gephardt View this post on Instagram Instagram PostSam Worthington appeared in Russell Crowe’s The Exorcism most recently and has several huge roles to his name already. He is part of James Cameron’s Avatar series and has worked on multiple major projects, such as Under the Banner of Heaven and Manhunt.In Horizon: An American Saga, Worthington’s character will be called First Lt. Trent Gephardt, which adds a unique layer to his stellar career.Other cast and crewOf course, the above actors are not the only recognizable faces that will feature in Costner’s epic series. A range of names, such as Danny Huston, Michael Rookey, and Abbey Lee, are expected to be seen in the first movie. The rest of the cast has been stipulated below:Danny Huston as Colonel HoughtonMichael Rooker as Sgt. Major RiordanJena Malone as Ellen/LucyAbbey Lee as MarigoldJamie Campbell Bower as Caleb SykesJon Beavers as Junior SykesOwen Crow Shoe as PionsenayTatanka Means as TaklishimWasé Chief as LiluyeLuke Wilson as Matthew Van WeydenElla Hunt as Juliette ChesneyTom Payne as Hugh ProctorWill Patton as Owen KittredgeIsabelle Fuhrman as Diamond KittredgeHorizon: An American Saga will premiere in theaters on June 28, 2024.