Wagon Train
The Stark Bluff Story (7x29)
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Duke stops by the town of Stark Bluff looking for a friend and his wife who had formerly been on the wagon train. He finds out that the friend is dead, and his wife has been forced to work for ruthless saloon owner Zeb Stark, who bosses the town, including the judge and sheriff. When Duke tries to help her he is framed for killing a deputy, and Stark uses Duke's life as leverage to force the woman to marry him.