Zorro Rides Again (1937) is a 12-chapter Republic Pictures film serial. It was the eighth of the sixty-six Republic serials, the third with a western theme (a third of Republic's serials were westerns) and the last produced in 1937. The serial was directed by William Witney & John English and starred John Carroll as a modern descendant of the original Zorro. The plot is a fairly standard western storyline about a villain attempting to illicitly take valuable land (in this case a new railroad). The setting is a hybrid of modern (1930s) and western elements that was used occasionally in B-Westerns (such as the western feature films also produced by Republic).
In contemporary (for the 1937 production) California, villain J. A. Marsden aims to take over the California-Yucatan Railroad with the aid of his henchman El Lobo. The rightful owners, Joyce and Phillip Andrews, naturally object. Their parter, Don Manuel Vega summons his nephew, James Vega, to help them as he is the great grandson of the original Zorro, Don Diego de la Vega. He is disappointed, however, to find that his nephew is a useless fop (presumably Don Manuel had not paid too much attention to his family history).
Nevertheless, James Vega installs himself in the original Zorro's hideout and adopts the Zorro identity to defeat Marsden and El Lobo. This Zorro uses twin pistols and (like the original Zorro) a whip as his main weapons of choice, rather than a more traditional sword. (Source: wikipedia.org)