In the final act, it is midnight and a storm is passing. Triboulet returns to collect his prize in a sack and refuses Saltabadil's offer to help him throw it in the river, but just as he is about to do so, he hears the king's voice singing and realizes he has been duped. As lightning flashes, he opens the sack and sees that the body in it is his daughter; after asking forgiveness of him, she dies. A crowd is attracted by Triboulet's cries and believes he has killed someone, but a woman stops them from taking him away. A doctor also arrives at the scene and pronounces Blanche dead. Triboulet collapses, exclaiming ""J'ai tué mon enfant!"" ("I have killed my child!").