Jude Watson

A brother and sister search for the key to their family’s power. (Ages 9 to 12)

--- Added from Google Books ---

After seven members of their family are kidnapped by an organization called the Vespers, Dan and Amy Cahill must race against time to track down an ancient map to pay as ransom to bring the hostages home.

The Cahill family has guarded the world's greatest secrets for centuries, believing their search for the Clues was a private family matter. They were wrong. While Amy and Dan have been racing around the globe, a shadowy and ruthless organization known as the Vespers has been watching, waiting for the perfect moment to strike. Now, the Vespers are stepping out of the darkness, and they are ready to seize control. The world as you know it is about to change forever. Uncover the hidden history of the Cahills and their ancient enemies in this thrilling continuation of the 39 Clues saga. You will discover the truth behind the original Cahill ancestors and learn about the final, dangerous legacy Grace Cahill left behind for her grandchildren. The race for power has never been more perilous, and the stakes have never been higher.