The Silver Chair an old man, but his son and only heir, Prince Rilian, is missing. Aslan the lion sends two children from England to Narnia on a mission to resolve the mystery: Eustace Scrubb, from "The Voyage of the Dawn Treader", and his classmate, Jill Pole. In the frame story, Eustace and Jill are students at a horrible boarding school, Experiment House. "The Silver Chair" is dedicated to Nicholas Hardie, the son of Colin Hardie, a member of the Inklings with Lewis. Macmillan US published an American edition within the calendar year. "The Silver Chair" was adapted and filmed as a BBC
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