This 3rd book in the 39 Clues series was probably my least favorite so far. One of the things that I liked about this series up to this point was the history that the kids learn through reading it. This book was severely lacking in any kind of educational value. I also enjoyed how international locations have been described giving kids a bigger picture of the world beyond there own little corner. Unfortunately, this book's description of Tokyo was a little too much in the style of a B-movie for me. As for the story, we get more of the same globtrotting, getting out of seemingly impossible situations within the same page of getting into them (how about a little suspense before making everything turn out ok?), and the added theme of teenage romance & betrayal that I was not crazy about. That being said, kids will enjoy the adventure and at this point are probably pretty invested in seeing what happens to Amy & Dan. I will read on because I'm a little invested in them too, but I hope the series improves.