Their is a gap of decades between 'The Magician's Nephew' (Book 1) and 'The Lion, Witch and the Wardrobe (Book 2). Between Prince Caspian (Book 4) and 'The Voyage of the Dawn Treader' is only a few years. This book keeps us with Prince (King) Caspian and explains more of what happened after the kids left in Book 2. It's a great gap filler to give us the details background of what happened in the short time between books. This book also points out that time in Narnia is slowing down to match our own. This book sets the stage for the remaining books.I won't give any spoilers. I will say that you need to read this book to understand that one of the kids will be left out of the rest of the books.
This was my second audiobook from audible.com, and I'm sorry to say I was quite disappointed. This is one of our favorite books, so we were eagerly anticipating this one for our driving trip. The narrator does a marvelous job, but the audio quality is such that we could not easily listen in the car. There was a great deal of background noise -- not really hissing or popping, but that kind of echoey white noise you sometimes get. The children were unable to understand and we kept having to pause and repeat what had been said. Very frustrating.