Desc: Vampires of the Night: Judith, daughter of a criminal, has been placed by her grandmother, a nurse, in the cradle of Edna, the little Duchess of Burville. The real heiress is brought up as a singing girl at a rough inn, kept by the old evil-faced nurse, Roxana. In the twenty-five years that pass, the false Duchess manifests the strength of heredity, her father's evil tendencies coming to the front. Judith falls in love with Lord Norman, a poet, and in his honor gives a ball at the magnificent Burville Castle. The poet, however, does not reciprocate her affections. Later he bears Edna, the singing girl, on the street. He is startled at the resemblance between Edna and the Duchess of Burville. Enchanted by her singing, he trails Edna to her home and then starts wooing, which is even carried to the point where the poet dons the clothes of a workman in order to be near his sweet singing girl. Roxana is pressed for money by a confederate, and Roxana in desperation goes to the false Duchess and explains to her the secret of her birth, and demands money as a price of silence. Judith tells her to come later. In the evening the confederate grows more furious in his demands, and not trusting Roxana out of his sight, he insists upon Edna being sent to the castle for the hush money. Edna received by the false Duchess, who decoys her which she falls into the absence, the grandmother into an altercation. There is a fight and the lamp is upset, and the house is set on fire. Lord Norman, seeking Edna, comes in and finds the café smothered in smoke. Going upstairs into the flames he encounters a form upon the floor, and thinking it to be Edna, he struggle down the stairs with it. It is Roxana, who, dying, confesses that Edna is the real Duchess, and that she had been sent to the castle. Hurrying away to the castle, Lord Norman demands to see Edna. Judith's actions convinces him that she has been put out of the way. He accuses her of the crime. Under his fiery denunciations, Judith shows him where Edna had been dropped into the sewers underneath the house, and down into their murky depths goes the lover. He finds Edna stunned, but otherwise unhurt by the fall. They make their way to freedom. Meanwhile, in the castle, Judith, overcome by remorse, has ended her wicked life. Edna is restored to her rightful position, there to enjoy the love of he who had loved her as a humble street singer.