This was an entertaining, light book on the science-fiction side of fantasy. I love puzzles and riddles so I enjoyed the beginning. This leisurely b..Show More »eginning gave the book a casual, fun feel. Most of the action comes at the very end of the book. So close to the end that I was expecting a cliffhanger ending where the characters get in trouble and it isn't resolved. Not so. In a way, this book could be a prequel to the series. I expect the pacing will probably pick up in the following books.