This is the first of the Hardy Boys books. The brothers try to solve the mystery of a missing treasure said to be found in a tower near their home. It's full of mystery and intrigue, and quite worth the read. I love the Hardy Boys. Although this book is rather old, it's fun to read. The words are harder than most of today's kid's books. If you're looking for a fun mystery that won't take too long to read, than this book is exactly what you need. If your 10 or up then this book is for you. Also those of you who like pictures, this book has plenty of pictures. This book is a true art. I would give this book a 5 out of 5.