Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: All you can ask for in a juvenile mystery

The Three Investigator series have that necessary attribute that all good juvenile books have - the ability to be enjoyed by adults. The mystery in this book is quite good.This is #5 in the series. Interestingly, #2 through #5 have each featured a boy tied to the plot of different nationalities - #2, Mexico, #3, Egypt, #4, China, and #5, Japan. One wonders if the streak will continue in #6?These books can't really hold up when compared to the current Harry Potter or Twilight series but they have a charm all their own. They are dated somewhat, but not horribly. If you know a child who likes to read you might point him in the direction of these books.