Cowboy Larry O'Day (Bob Steele) and his sidekick Lucky Smith (Don Barclay) happen upon a distraught Barbara Hartwell (Harley Wood), who is about to be arrested for the murder of her uncle.
With Barbara behind bars, Larry is determined to find the real killer and soon finds himself in the middle of a mystery involving crazed German entomologists and a smuggling ring bringing Chinese "picture girls" across the Mexican border for sale to wealthy Chinese bachelors.
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https://www.youtube.com/watch?v=iIuRwoMbQDM
When Princess Soraya (Michèle Girardon) refuses to wed a powerful politician, she's sold into slavery and bought by shrewd trader Akrim (Jose Jaspe). After awhile, she manages to escape and makes her way to the river, where strong man Anthar (Kirk Morris) and his friend, Aimu (Roberto Dell'acqua), are catching fish. Anthar listens to her story and vows to help her, but Soraya runs away. After they catch up with her, Anthar and Aimu head to the castle to battle for her safety.
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https://www.youtube.com/watch?v=ltDUPTb-VSI