The 39 Clues Series (referred by the official site as The Clue Hunt) is the first series in the young adult book franchise, The 39 Clues. The series features 11 exciting adventure books written by various bestseller authors. The story of this bestselling series is built around two young orphans Amy and Dan Cahill. They just learn that they are members of a very powerful and influential family, the Cahills. They also find that branches of the Cahill family are fight against each other over the clues to create a super serum. Unavoidably, the two young siblings are dragged into the fierce competition.
The series is followed by The 39 Clues: Cahills vs. Vespers.
Summary of the Book
The first book in the #1 bestselling phenomenon sends readers around the world on the hunt for the 39 Clues!
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.