Dawn of Revenge

"Ace" Hall is a bitter, half-crazed man who was disabled as a result of losing Alice Blake to Nelson Miles and going over a cliff in a fight with Miles. Hall kidnaps the Mileses' infant son and rears the boy, Judson, as his own. He later discovers that there is also a beautiful Miles daughter, Sherry. Plotting his final revenge, Hall maneuvers Judson into marriage to his own sister. At the wedding ceremony, Alice learns Judson's identity, but she then reveals that Sherry was adopted. The young couple finds happiness, and Hall dies in an explosion.