The 39 clues: The maze of bones

This book is about two children called Amy and Dam (orphans) who went to the funeral of their grandma. Her will was to give the Cahills a secret or a million euros. Of course, Amy and Dam prefer the clues which lead them to an incredible adventure. This book is the first of the series 39 clues. There are ten books published and you can play a game on line clicking here

RRF 7X

Two orphans belonging to the most powerful family in the world get involved in a race to find the secret to the most powerful person in the world and find the 39 clues, Action-packed, gripping. Read it, it's the longest collection which doesn't make you loose interest in any of its books.
BE 8X