A great western from the 40's is out today on blu-ray, and it was one that cast John Wayne in one of those darker roles that he was always so good in (see him in The Searchers for a look at his most famous twisted character). Always great as the traditional western hero, but even better as a shady antihero with ulterior motives, here he played a damaged rancher leading a cattle drive from Texas to Missouri, who grows ever more at odds with the younger cowboy he took under his wing (Montgomery Clift), when he slowly reveals how disturbed he really is. The movie has an old Hollywood copout of an ending, clearly not the natural climax the story was headed towards, but overall it's a great film from the genre worth seeking out.
Trailer (sorry about the subtitles on this one):