Lewis' sequal to the first Narnia book. Some of the best lines in the series are written for the Chief Mouse, Reepicheep. For anyone who tired of Lewis' allegorical material in the first bookm, I would say this one is more original as far as the conflicts go.
One my favorite themes, continued in this work, is what I call Good Dreams. Frequently, Lewis points out things about Lucy, Caspian, Peter, and other characters which reveal desires that later will be fulfilled. I like that. For example, in book 1, we learn that "there is nothing Lucy liked more than look and feel of fur." And I think this anticipates Lucy's satisfaction in burying her little hands in Aslan's great mane later in the book.
Prince Caspian doesn't seem to have deeply held dreams about being king, and that is interesting to me because, come one, the kid was born a royal prince! He has other dreams; he longs for Narnia to be filled with walking trees and talking beasts like it was of old. When people were alive (so long as you will accept trees and animals as people lol!) And by the end, I think it clear that Capian's dream is fulfilled. Additionally, there is anticipation of his oversea voyage that becomes the subject of book 3.