Reviewed by Kiana H. (age 8)
My favorite characters are Nate the Great and Sludge because Sludge gives Nate a clue to the case! I felt sad for Claude because he lost his favorite stamp! The part that I like was when Nate the Great finds the stamp because Claude loves his stegosaurus stamp.
I think this book is for all ages to read, especially if you like stamps and mysteries. I recommend this book because it teaches you not to leave stamps upside down outside on rainy days!