The Chronicles of Narnia (although we do not learn their surname until "The Voyage of the Dawn Treader"), and eventually become Kings and Queens of Narnia reigning as a tetrarchy. Although introduced in the series as children, the siblings grow up into adults while reigning in Narnia. They go back to being children once they get back to their own world, but feature as adults in "The Horse and His Boy" during their Narnian reign. All four appear in "The Lion, the Witch, and the Wardrobe" and "Prince Caspian"; in the latter, however, Aslan tells Peter and Susan that they will not return, as
The Chronicles of Narnia the work. During the course of the series we learn in passing, that the world of Narnia is flat and geocentric and has different stars from those of Earth, and that the passage of time does not correspond directly to the passage of time in our world. "The Chronicles" cover the entire history of the world of Narnia, describing the process by which it was created, offering snapshots of life in Narnia as its history unfolds, and how it is ultimately destroyed. As is often the case in a children's series, children themselves, usually from our world, play a prominent