Back in her Toledo cell, Luzia endures the emptiness after Teoda’s removal. Guard Rudolfo now keeps watch overnight and badgers Luzia for the love spell Teoda promised him, but Luzia insists he must learn real details about Mariposa Baldera if he wants the magic to work.

Rudolfo returns with information and, at Luzia’s urging, steals a lily bulb from the monastery gardens. Luzia whispers over the bulb so it blooms into lilies for Rudolfo to give Mariposa, and Rudolfo begins to change his behavior to win her attention rather than merely stare at her. Neva mocks the hopefulness, warning that people forget the work required to sustain anything good.

The next day Rudolfo brings water and orders Luzia to wash, signaling sentencing. Luzia understands this means her judgment will be announced before the public ritual of the auto de fe, and she prepares herself while considering how she might avoid burning alive, even imagining using wild magic for vengeance if the king appears.

Luzia is taken to the sala dorada to face the inquisitors, but she freezes when she sees Víctor de Paredes present as her “advocate,” with Santángel standing behind him, alive and unscarred. Don Pedro announces that if Luzia confesses “truly,” the consulta de fe will decide her sentence today and her public punishment will occur tomorrow.

Pressed to name who led her astray, Luzia first offers Ovidio Halcón, then realizes the tribunal wants new, living targets and Víctor is pushing her to denounce Marius and Valentina Ordoño. Instead, after Santángel subtly frames himself as a flank target meant to harm Víctor, Luzia pivots and testifies that Santángel visited her daily, seduced her, claimed to be a demon, and taught blasphemies, even daring the tribunal to wound him to see him heal. As the room recoils and Víctor tries to dismiss her as mad, Santángel steps forward and ends the “deception” by confirming Luzia’s accusation: he declares he is the devil’s own man.