Time is running out for Grace Cahill as she struggles to make the most important choice of her life: a decision that will shape the future of the Cahill family . . . and the world at large. After spending centuries lurking the shadows, the Cahills' enemy - the Vespers - are planning an attack, and sending Amy and Dan on a dangerous hunt for The 39 Clues might be the only way to stop them.

 

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

There are 28 pages in this book. This book was published 2012 by Scholastic .