Bob Valdez Burt Lancaster is an aging town constable who is tricked into killing an innocent African-American man by powerful rancher Frank Tanner Jon Cypher, whose hired gun R. L. Davis Richard Jordan shoots up the hovel where the wrongly accused man and his Indian wife were trapped. Valdez believes it would be a fair gesture to raise $200 for the widow, with $100 coming from Tanner and the rest from others in town, an idea that sets off a dangerous chain of revenge and moral questions in a harsh frontier town.
Tanner is livid at the old man’s suggestion. He orders ranch hand El Segundo Barton Heyman and his men to tie Valdez to a heavy wooden cross and drive him into the desert. The central pole is so long that Valdez must walk bent over, a brutal crucible that tests his endurance. He finds an oasis blocked by two trees that he repeatedly tries to ram with the ends of the cross. When it finally breaks, the jagged ends are driven into Valdez’s back, delivering a painful, paralyzing assault that sparks a fight for survival in the open, sun-scorched wasteland.
Davis eventually locates the downed lawman and cuts the ropes, freeing the unconscious man. The badly injured Valdez crawls to the ranch of his friend Diego Frank Silvera, where he is nursed back to health. Diego’s hospitality becomes a turning point, but Tanner has chosen an especially stubborn target: Valdez is a wily, experienced Indian fighter and a marksman with a rifle. Valdez dons his old cavalry uniform and sends Tanner a message via one of the rancher’s wounded men Héctor Elizondo:
> Valdez is coming.
Valdez sneaks into the compound and, during the ensuing gun battle and his escape, kidnaps Tanner’s woman, Gay Erin Susan Clark, for whose favors it is rumored that Tanner had her husband killed. With Gay Erin restrained, Valdez systematically eliminates the men Tanner sends after him with his long-range Sharps rifle. The one mercy he shows is to Davis, after the gunman screams, “I cut you loose! I cut you loose!” and reveals that the cut on the left wrist under Valdez’s glove came when his knife slipped as he freed himself from the ropes.
Now Valdez has two hostages, and he must navigate the dangerous limbo of pursuit and captivity. While hiding from Tanner’s posse, Gay Erin reveals that she knows who killed her husband, and she confesses that she killed her own husband to be with Tanner, not the other way around. Valdez frees her, but she remains torn, her loyalties shifting as the danger around them tightens. The revelation reshapes the moral landscape of the conflict, forcing Valdez to weigh vengeance against a possible path to justice.
Despite Gay Erin’s help, Valdez is finally overwhelmed, surrounded, and captured. Tanner and his men ride up, ready to finish the job. The moment of choice arrives: the men are ordered to shoot, but Davis backs off, showing he has no gun, and El Segundo compels his own men to stand down, refusing to obey orders. That leaves Tanner to face the consequences of his own cowardice in a one-on-one confrontation with Valdez.
Tanner turns out to be a coward when faced with a direct challenge. Gay Erin, battered by the violence around her, refuses to return to Tanner’s side, choosing a path of independence even as the dust settles. In the tense standoff, Tanner snarls at Valdez, “I should have killed you three days ago.” Valdez quietly retorts, “Or paid the $100,” a line that crystallizes the story’s uneasy calculus of justice, guilt, and cost.
