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Archduke Alexander (Clive Brook) is better known for his sexual conquests than his diplomatic triumphs. After a lifetime of loving 'em and leaving 'em, the Archduke finally meets a girl he can't leave, Hungarian lass Judith Peredy (Billie Dove). She resists his advances but can't hide the fact that she's in love with him. But Judith's brother Eugene (Nicholas Soussanin) resents the Archduke's presence, leading to the inevitable outbreak of violence. Judith and Eugene are thrown into prison, whereupon the conscience-stricken Archduke renounces his noble title, releases the brother and sister, and promises to be a good and faithful husband to the heroine. The Yellow Lily was the second of four cinematic collaborations between star Billie Dove and director Alexander Korda.