The Horse and His Boy published
The Horse and His Boy is a novel by C. S. Lewis.
It was published in 1954, making it the fifth of seven books published in Lewis' series The Chronicles of Narnia. The books in this series are sometimes ordered chronologically in relation to the events in the books as opposed to the dates of their original publication. In this alternate ordering, The Horse and His Boy is the third book, being a midquel of The Lion, the Witch and the Wardrobe. Although it was published after The Silver Chair (due to Lewis not wanting to break up the Caspian triad), it was written before it, so in written order it is fourth. The story is also referred to as a story-within-a-story in the fourth published book, The Silver Chair. The Horse and His Boy is the only Narnia book which does not feature children from our world as the story's main characters, although the adult Queen Lucy, Queen Susan, and King Edmund (all of whom first appear in The Lion, the Witch and the Wardrobe) do appear in the book, and the dynamics of the story develop from Susan's interactions. Peter, the High King, does not appear in the book but is mentioned.