Prince Caspian (character) arrive to witness the aged Caspian set off to sea. He had told his people that he wanted to revisit the places of his youth, but many believe that Caspian fears his son is lost forever and has gone on the voyage to seek Aslan to ask who could be the next king of Narnia. Meanwhile, Eustace and Jill rescue the lost Prince from the underworld where he had been held captive by his mother's murderer, the shapeshifting Lady of the Green Kirtle. Caspian returns to Narnia in time to embrace his son before dying. After his death, Caspian is
The Silver Chair accompany Eustace and Jill back to their own world for a brief time, where they drive off the bullies before Caspian returns to Aslan's Country. Experiment House becomes a well-managed school, and Eustace and Jill remain good friends. In Chapter IV of the book, an owl speculates that the Lady of the Green Kirtle – the enchantress of the Underworld – may be "one of the same crew" as the White Witch from "The Lion, The Witch, and the Wardrobe" and "The Magician's Nephew". Some readers have suggested that she may in fact be the White Witch brought back to