The first book in this groundbreaking multimedia series sends readers around the
world on the hunt for the 39 Clues. Written by #1 NYT bestseller Rick Riordan,
and backed by $100,000 in prizes
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