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 Lion, the Witch and the Wardrobe" 40 years later. Completed in March 1953 and published 4 September 1956, "The Last Battle" chronicles the end of the world of Narnia. Jill and Eustace return to save Narnia from the ape Shift, who tricks Puzzle the donkey into impersonating the lion Aslan, thereby precipitating a showdown between the Calormenes and King Tirian. This leads to the end of Narnia as it is known throughout the series, but allows Aslan to lead the characters to the "true" Narnia. Fans of the series often have strong opinions over the order in which the books