Grace's lawyer shows them a video she recorded before she died. Besides Amy and Dan, these include the Holts, the Kabras family, Alistair Oh, Ian and Natalie, ex-KGB agent Irina Spasky, famous rapper and TV show host Jonah Wizard, the Starling Triplets, and Aunts Beatrice and Ingrid. At the funeral, some of the extended Cahill family is called into a separate room for the will reading. Just before the funeral, they have a run-in with their distant relatives, the Holt family: Eisenhower and Mary-Todd, and their three children, Hamilton, Madison, and Reagan. Traveling with them is their guardian, their Aunt Beatrice. Grace's grandchildren, Amy and Dan Cahill, are on their way to their grandmother's mansion, where her funeral is being held. No sooner does she die, then from out of the nearby shadows steps a man dressed in black, who consults quietly with her lawyer, William McIntyre.

Just before Grace Cahill, the matriarch of the Cahill family dies, she beckons her lawyer to her bedside and dictates a change to her will. It also includes many of the most dangerous: the myriad members of the Cahill family are locked in a deadly internal feud to discover the ingredients to a powerful serum that only they know about.

They are members of the Cahill family, which includes many of the most famous and accomplished humans in history. 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.The first book in the series The 39 Clues, Rick Riordan’s novel The Maze of Bones (2008) begins the adventures of Amy and Dan Cahill, a pair of orphans who discover, after their grandmother's death, that they belong to a long, secretive, and powerful lineage.

39 Clues hidden around the world will reveal the family's secret, but no one has been able to assemble them.

Everyone from Napoleon to Houdini is related to the Cahills, yet the source of the family power is lost.

Annotation: 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.

39 clues the maze of bones