When Grace Cahill dies, she leaves her heirs with a choice—take the $2 million or give it up for one clue that will lead them on a wild journey in search of a great treasure and all the power in the world. For Amy and Dan Cahill, the money is tempting, but the adventure means learning more about their grandmother, their deceased parents, and a family history that includes almost every major figure and event known to man. But there are others who take the clue as well, and they all have one objective in mind—take out their competition. Now Dan and Amy are running for their lives, and searching for the answers to their first clue, and the beginning of the greatest adventure they will ever have. Read all ten of the 39 Clues books, and search for the clues yourself at http://www.the39clues.com/.
