By Clark Collis
Updated September 24, 2014 at 07:53 PM EDT
Credit: Kevin Winter/Getty Images

Patrick Wilson (The Conjuring) and Matthew Fox (Lost) have joined the Western film Bone Tomahawk, alongside previously announced cast members Kurt Russell and Richard Jenkins. The film starts on Monday in southern California and is written and directed by novelist and first-time filmmaker S. Craig Zahler.

According to the film’s official synopsis, Bone Tomahawk concerns four men who “attempt to rescue a group of captives from a band of cannibalistic troglodytes that live beyond the edge of civilization.” Wilson will play Arthur O’Dwyer, a :driven and thoughtful cowboy whose rise to the foreman position of a cattle outfit is interrupted by an unfortunate accident that reshapes his life in unforeseen ways.” Meanwhile, Fox’s character is John Brooder, the

“eloquent, albeit inscrutable gentleman whose dark inclinations have put him and his polished weapons at the very edge of the western frontier.” The film is being described as “ultraviolent.”