The Broadway Madonna: Dr. Kramer, secretly married to cabaret dancer Vivian Collins, forces his wife to encourage the attentions of wealthy Tom Bradshaw in order to blackmail Tom's father, Judge Bradshaw. At a masked ball Kramer, costumed like Tom, robs Bradshaw's safe and kills the judge. Mrs. Bradshaw is jailed for the murder, but a suspicious Tom discovers the truth with the aid of Kramer's nurse, Gloria Thomas, with whom he falls in love.