New secrets, new betrayals, new UNBELIEVABLE twists! 39 Clues Card Pack 3 shows the Cahills as you've never seen them before . . . and reveals ALL NEW CLUES!

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Just what is hidden in the Tower of London? What secrets lie in the desert city of Marrakech? What is the deadliest spider venom and how do the Lucians use it?

The 39 Clues Card Pack 3 reveals the jaw-dropping secrets of the notorious Cahill family . . . as well as the location of the newest crop of Clues!

 

This book is part of a book series called 39 Clues .

This book was published 2010 by Scholastic US .

The Unknown Adventurer is still believed to be at large in the wild.