It took me more than half the book to start enjoying this book. In fact, I almost gave up in the middle. I ranked it 4 stars because it brought me around by the end of the book. I'm not sure why, it just took me a while to get into the characters. However, by the end Riordan had sold me on the characters and the plot and I'm greatly looking forward to the continuation of this series with the next book. I'm even liking that Percy Jackson will be starring in the next book, though I had felt that I was pretty much done with him after the end of the last series. That said, I think I'm going to like this series just as much as I liked the Percy Jackson series. I feel like Riordan sometimes takes a while to warm up with his series, this book is case and point.