"Helena" by Machado de Assis is a novel published in 1876. When Counselor Vale dies, his will reveals a shocking secret: he has a daughter named Helena whom his family never knew existed. As Helena enters their home, she wins over her half-brother Estácio and aunt Dona Úrsula with her grace and charm. But as Estácio grows increasingly attached to his new sister, forbidden feelings emerge that threaten to destroy them both—especially when Helena's own mysterious past begins to surface.