El hijo de Dracula

Katherine "Kathy" Caldwell is the fiancee of Frank Stanley and sister of Claire Caldwell and lives in Dark Oaks farm, where her father runs a plantation. After traveling to Budapest, Kathy invites her friend Count Alucard to visit Dark Oaks. On the day of the arrival, the count is the guest of honor of a ball in the farmhouse, but only his luggage comes in the train. During the night, Alucard that is actually Count Dracula arrives and kills Kathy's father. The family friend Dr. Harry Brewster suspects of the mysterious Alucard and asks information about his family to his friend Prof. Lazlo. Meanwhile Kathy is the heiress of Dark Oaks and she secretly marries the Count Dracula. Frank follows her and accidentally shoots Kathy to death. When Dr. Brewster meets Kathy at home, he realizes that she got married to Dracula and is also a vampire.