In a village Julia refuses Hippolitus's urgent marriage proposal while still grieving Ferdinand, insisting that joy would dishonour a brother whose fate remains unknown. Duke de Luovo's men pursue them anyway, driving the lovers from cottage to cave until they enter a passage that opens beneath Castle Mazzini itself. Deep in the rock Julia finds a frail woman who cries "My daughter!" and reveals herself as the long-imprisoned marchioness, alive fifteen years after a staged funeral.
Vincent's pity, the marquis's forged death certificate, and the southern wing's sounds finally converge in one human body. The mother tells how jealousy and adultery led to secret imprisonment, how Vincent staged her funeral and swore servants to silence, and how the marquis maintained power by turning his wife into a ghost story children were taught to fear. She describes years of bread and water, prayers, and the hope that her daughters might one day hear her through the walls. Mother and daughter embrace through tears, exchange histories, and plan escape through the underground route Hippolitus has found. For a few minutes the woman the castle called a ghost is simply a mother holding her child.
The bandits had insisted Ferdinand was not hidden in their caves. That denial gives Julia a thin hope and makes Hippolitus more afraid. Once the mother can speak, she says she did not know for years that the cell sat under the castle. A man in the marquis's pay brought a week's food by night. She heard a voice through the stone and did not answer, because the marquis had sworn to kill her if she revealed the place. Julia understands the voice was Ferdinand in a nearby dungeon, and that the groans he heard in the marble hall were this woman's.
Hope lasts until the spring-locked door traps them again inside the hidden prison. Julia chooses to stay with her mother rather than go up and marry the duke, because a legal release would only move her into another man's power. Hippolitus has to climb back alone, carrying a story that would destroy the marquis if anyone upstairs believed it. Emilia still thinks the first marchioness is buried. The marquis still governs by that lie. The door that showed Julia a living mother has shut on both of them, and Ferdinand, somewhere above, does not yet know the groans he once heard had a voice.
Coming Up in Chapter 15
Unable to bring Julia back, the marquis decides the imprisoned marchioness must die before he can appeal to the pope. Maria de Vellorno pushes him on, and Baptista is about to tell him she has been meeting a cavalier at the sea pavilion.