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Although the onscreen credits state that the picture is "from an original story 'El torbellino' by Johnston McCulley," no short story under that title has been found. McCulley, who also invented the character Zorro, wrote a series of short stories about a character named "El torbellino" in 1934. The stories, printed in the magazine Thrilling Adventures, bore titles such as "The Whirlwind's Frenzy" and "The Whirlwind's Red Trail."
The film, which was a U.S. co-production with Mexico and El Salvador, bears a prefatory title card that states: "This story was filmed in the village of Panchimalco, the Republic of El Salvador, and is based on incidents that actually occurred in Central America." Another title card at the film's conclusion states: "Salvador Films wishes to thank the government of the Republic of El Salvador, the civil and ecclesiastical authorities for their valuable assistance." The composer's surname is usually given as "Daz Conde." A contemporary source reported that Karen Wilde was originally cast as the female lead.