This sometimes gets called the first western noir, and it's a classic example of the style. The exterior New Mexico panorama (shot by James Wong Howe) is gloriously arthouse, with the low, brooding skies, dead black trees and deep shadows of towering canyons which swallow up the transient, wandering humanity.
Film noir is usually about sex and greed, but this has a western theme of revenge. Other genre motifs are intact: there's voice over narration; a cursed male protagonist just back from the (Mexican) war; and it's a psycho-drama with references to dime-store Freud. As well as the stunning, high contrast photography.
Mitchum plays an orphan who grew up disturbed by violent images of the death of his father in a gunfight. He was adopted by an evasive widow (Judith Anderson) and later falls for her daughter (Teresa Wright) whose love/hate affair recalls Gilda (1946). He will never find peace unless he resolves the hazy, long ago memories.
It's a literate psychological western but director Raoul Walsh includes plenty of action too. And it's an ideal vehicle for Robert Mitchum as he entered his prime. Surely no one ever photographed him as magnificently. Later the same year he starred in all time great noir Out of the Past, which contains many interesting echoes.