List of The 39 Clues characters
Amy and Dan Cahill (both from Boston,who are kids that took up the quest). Nellie Gomez (Also from Massachusetts) serves as their au pair and supervisor. They are the protagonists of the franchise. Amy is fourteen years old while Dan is eleven. Both of them have jade eyes. Amy is shown to be intelligent and analytical, while Dan is more active, with a photographic memory. Amy, however, is agoraphobic and pyrophobic,; while Dan has asthma and is claustrophobic. They were both wards of Beatrice Cahill since the death of their parents Hope Cahill and Arthur Trent. Throughout the hunt, Amy, and Dan provided the least power to search for the Clues. Surprisingly, they have collected as many Clues as everyone in the hunt, with the help of Nellie Gomez . In the end, Amy and Dan reunite the Cahill family altogether, bringing peace to every Cahill who worked almost 500 years for finding the 39 Clues. Following the events of Into The Gauntlet, and after making peace with Ian and Natalie Kabra, Hamilton Holt, Alistair Oh, Sinead Starling and Jonah Wizard, Amy is named their grandmother Grace's successor and head of the family. They are now in custody of Nellie Gomez and Fiske Cahill. Their branch is revealed late in the series to be Madrigals; the secret fifth branch descended from Madeleine Cahill. Amy's official card is No. 18 while Dan's is No. 2.
Doublecross (series)
The 39 Clues: Doublecross is the fourth series in the 39 Clues series of books. It follows the story of the Cahills as they suffer from infighting. In the first book, Mission Titanic, Ian Kabra has become the new leader of the Cahills. Dan and Amy decided to take a break from the Cahills after nearly dying from combating Pierce and his thugs. Although Ian believe that he is much more fit to rule the Cahills that Amy and Dan, it seems that the Cahills do not fully recognize Ian as the leader. Ian has suspicions that many Cahills are plotting a coup. When this coup is realized, Ian Kabra and Cara Pierce are expelled from the Cahill home in Attleboro, Massachusetts. The leader of the coup is the Outcast, and he plans to replicate history's worst disasters in order to test Cahill leadership. The Cahills are expected to prevent the disasters in order to prove that they are worthy. Throughout the series, the Cahills make many shocking discoveries, discovering that Grace was actually ruthless and cruel, and that the Outcast is Nathaniel Hartford, the husband of Grace whom Grace wanted dead. There are four books in the series: