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This Maurice Tourneur production was a tour de force for mid-'20s era vamp Barbara LaMarr. When a girl (LaMarr) tries to drown herself in the Seine, she is rescued by dancer Gonzalo Montrez (Charles de Roche). She then becomes a famous dancer known as the White Moth. Douglas Vantine (Ben Lyon), a wealthy young man, falls prey to the White Moth's charms, but his fiancée, Gwen (Edna Murphy) clings stubbornly to him. Douglas' older brother, Robert (Conway Tearle), steps in and courts the White Moth, only to save his brother. He wins her and they travel to America where they are married. But then Robert reveals his motivation for the wedding and walks out on her in spite of her protests that she really loves him. He finally realizes that he loves her too and returns just as Montrez has reentered her life. Before he can cause too much trouble, Montrez is killed by Ninon (Josie Sedgwick), a jealous chorus girl. All this time, the White Moth has remained true to Robert, and they are reconciled. This film was based on a magazine story by Izola Forrester.