High Noon (1952, Garry Cooper, Lloyd Bridges, Katy Jurado, Grace Kelly, Otto Kruger, Lon Chaney Jr.)
When Cooper, who plays Marshall Will Kane, learns that a recently released from prison convict is returning to town to settle a grudge against him, Cooper tries to enlist the aid of anyone who can help. His friends, his deputy, even his wife fail to recognize the code that forms the bulk of his core. Just as his friends feel they cannot help him, Cooper is just as impelled to the opposite. By movie's end, he meets the bad guys, kills them, and then is stunned to realize that as this external battle has ended, a far more complex internal one is just beginning.