This is a bit of an odd film that comes in at the tail end of Billy the Kid's life and his friendship/feud with Sheriff Pat Garrett to tell the fictional story of how their lives intersected with an orphan boy named Rio, who witnessed the death of his mother at the hands of his father and the subsequent kidnapping and presumed rape of his sister by his uncle and cohorts. Rio thinks Billy is going to help him find his sister, but Billy seems to be too consumed with his own problems, and then he died, so Garrett winds up helping Rio find his sister. But I'm not sure trying to tell Rio's story and then weaving in the real life happenings of Billy and Pat works too well, and something felt off about the film. Dane DeHaan as Billy and Ethan Hawke as Garrett gave excellent performances. It's just that the premise felt a little disjointed and forced.