See below for English description.
? sa mort, la riche et puissante Grace Cahill propose un choix difficile ? ses h?ritiers: accepter un million de dollars ou se lancer dans la chasse aux 39 cl?s, une dangereuse course autour du monde qui permettra aux gagnants de devenir les personnes les plus puissantes de la plan?te! Amy et Dan Cahill figurent parmi les h?ritiers de Grace Cahill. Apr's quelques minutes de r?flexion, ils r?alisent qu'ils n'ont rien ? perdre... et tout ? gagner. Ils se lancent dans la chasse aux 39 cl?s!
Ultime ?tape: Londres, sur les traces de Shakespeare. Apr's avoir trouv? un indice pr's de la tombe du c?l?bre dramaturge, Amy, Dan et Nellie partent vers une ?le inconnue, au large de l'Irlande. Ils y d?couvrent la demeure ancestrale de Gideon Cahill, l'anc?tre de la famille. Mais ils ne sont pas seuls, tous les repr?sentants de chaque branche ont suivi la m?me piste...
The Cahills are the most powerful family the world has ever known. 39 clues hidden around the world guard the family's power, and it's up to the reader to find them by reading the books and visiting our website. It's Cahill versus Cahill in a worldwide race to find the clue... and beat the competition.
Throughout the hunt for the 39 Clues, Amy and Dan Cahill have uncovered history's greatest mysteries and their family's deadliest secrets. But are they ready to face the truth about the Cahills and the key to their unmatched power? After a whirlwind race that's taken them across five continents, Amy and Dan face the most difficult challenge yet - a task no Cahill dared to imagine. When faced with a choice that could change the future of the world, can two kids succeed where 500 years worth of famous ancestors failed?
Original Title: Into the Gauntlet