The Broadway Madonna (1922)

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.