The document provides an introduction to the 1950 western film Winchester '73, directed by Anthony Mann and starring James Stewart. It summarizes the film's plot about Lin McAdam's pursuit of his father's killer that leads him to a shooting contest in Dodge City, where the rare Winchester '73 rifle is the top prize. Though Stewart's character wins the rifle, it is stolen, setting off a chain of events where the rifle and its owners define a period in American history. The introduction notes that while Winchester '73 helped revive the careers of Mann and Stewart, it also had a significant influence on the western genre by bringing a psychological intensity and blurring lines between heroes and villains that was new for westerns.