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Son of Dracula represents a felicitious creative collaboration between director Robert Siodmak and his screenwriter-brother Curt. The story is set in the American south, where the mysterious Count Alucard (Lon Chaney Jr.) has recently taken up residence. Katherine Caldwell (Louise Allbritton), a student of the occult, is fascinated by Alucard, so much so that she agrees to become his wife. But when Katherine begins to look and act strangely, her former suitor Frank Stanley (Robert Paige) suspects that something's amiss. Assisted by town doctor Brewster (Frank Craven) and psychologist Laszlo (J. Edward Bromberg), Frank comes to the inescapable conclusion that Count Alucard is actually the dreaded vampire Count Dracula's offspring (this much he might have figured out simply by spelling the man's name backward!) To prevent Dracula from spreading his influence throughout America, Frank and his confreres race against time to destroy the count and, hopefully, rescue poor Katherine.