The 39 Clues Series by Rick Riordan
The 39 Clues #1
The Maze of Bones
Rick Riordan
Minutes before she died Grace Cahill changed her will, leaving her decendants an impossible decision: You have a choice - one million dollars or a clue. Grace is the last matriarch of the Cahills, the world's most powerful family. Everyone from Napoleon to Houdini is related to the Cahills, yet the source of the family power is lost. 39 clues hidden around the world will reveal the family's secret, but no one has been able to assemble them. Now the clues race is on, and young Amy and Dan must decide what's important: hunting clues or uncovering what REALLY happened to their parents.
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The 39 Clues #11
Vespers Rising
Rick Riordan
The Cahills aren't the only family searching for the Clues. . . . The Cahills thought they were the most powerful family the world had ever known. They thought they were the only ones who knew about Gideon Cahill and his Clues. The Cahills were wrong. Powerful enemies --the Vespers-- have been waiting in the shadows. Now it's their time to rise and the world will never be the same. In Vespers Rising, a brand new 39 Clues novel, bestselling authors Rick Riordan, Peter Lerangis, Gordon Korman and Jude Watson take on the hidden history of the Cahills and the Vespers, and the last, terrible legacy Grace Cahill leaves for Amy and Dan.
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