The Shadow of Rosalie Byrnes (1920)

Leontine Maddern is a self-centered, unscrupulous actress, while her twin sister Leona is a serious and compassionate artist. Because of a scandal in which Leontine was involved, Leona uses her mother's maiden name of Rosalie Byrnes. Rosalie meets and falls in love with Lt. Gerald Cromwell and after they marry, Cromwell is sent overseas. His family, desiring that Gerald marry wealth, approaches Leontine and, mistaking her for Rosalie, offers to buy her off, and she accepts.