Twenty-five years before the story begins, Evans worked for Armitage. He absents himself from work a few hours one day to visit his sick wife, who has just borne him a baby boy. For this Evans is summarily discharged. Mrs. Armitage dies in giving birth to a girl. Mrs. Evans also passes away. But before dying, she makes her husband swear to bring up her boy as a doctor to help humanity. Wild with anguish, Evans conceives a plan to exchange his boy for his employer's baby girl, in order to guarantee to his child the education and comforts he himself might not be able to supply. He does this, leaving a note of warning to his employer, telling him that, should any harm come to his boy, the little girl will suffer in kind. He goes west. Twenty-five years go by. The foster boy has become a doctor. He accepts an offer from a western town, and goes west to begin practice. There he meets his father without knowing him. He falls in love with the girl, now a beautiful woman. They become engaged....
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