Very interesting book! But interesting in a good way! It is about a boy who lives in the walls of a Paris train station, he finds a few things his father left behind and tries to decipher the secret message he discovers. And he makes a few special friends along the way of course. Now this book looks very intimidating because it is almost 600 pages, but it is mostly pictures. The design of the pictures are so intricate and beautiful, but look closely there is a clue in some of the pictures. (Look mostly at the clocks.) shh!