This book is about a boy and a girl who solve the historic mystery of where the Benben stone is. The Benben stone was the home of the Egyptian sun god, Ra.

The girl is called Cleopatra and she is the daughter of a historical scientist. The boy is called Ryan and he is the son of a reporter. In their search for the Benben stone, Ryan swims in a river full of parasites, Cleo nearly falls in a deep pit, the children get chased by a janitor, and lots of other dangerous and exciting things happen.

This book is even better than the Adventure Island series and it is such a page-turner. It is as exciting and fun to read, but it is also interesting and you learn about Ancient Egypt. I think the characters are good for the book because Cleo is quite sensible and serious and Ryan is quite funny and artistic so they make a good team.

I would recommend this book to boys and girls who have read the Adventure Island books and who are 7 to 10 years old.

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