The Third Kiss (1919)

Missy, the heiress to her uncle's fortune, resolves to make atonement for the innocent lives lost when her uncle's box factory burns down because of his criminal carelessness. After her uncle dies, Missy disguises herself as an employee of the new factory and does settlement work where she meets Rupert Bawlf and his wife Cynthia. Rupert's friends Oliver Cloyne and Dr. Paton observe Rupert's infatuation with Missy and tell her that Rupert is the subject of gossip in society circles. Cloyne persuades Missy to wed him and avert scandal for the Bawlfs, and promises to divorce her later. After the honeymoon, Cloyne discovers Missy is an heiress. He kisses her twice and declares that if he kisses her a third time it will mean that he plans to keep her. Rupert is rejected by Missy and repents. Cloyne rescues Missy from a fire and gives her a third kiss that signifies their mutual love.