Vengeance is mine (1917)

Ruined by a powerful financial ring, Farrington commits suicide, after which his daughter Paula vows to take vengeance in her own hands and hunt the man behind the ring. At a house party, Paula meets Dr. Smith, who falls in love with her, but a misunderstanding separates them. Unsuccessful in locating the man but knowing that papers in the house of Van Brunt, one of the ring members, will identify the leader, Paula secures the papers with the aid of Old Bill Fitch, a reformed burglar. To her horror, she discovers that the man is Dr. Smith's father. Paula relinquishes vengeance for love, and Dr. Smith's father, realizing the error of his ways, agrees to make reparations.