Tensions run high in the explosive 8th book of 39 Clues, the #1 New York Times bestselling series. One belief has sustained fourteen-year-old Amy Cahill and her younger brother, Dan, on their hunt for the 39 Clues: They are the good guys. But then a shocking discovery about their parents shatters everything Amy and Dan think they know, dividing the two siblings for the first time ever. When Dan disappears in a country of more than a billion people,...

Cahills are being kidnapped by a shadowy group known only as the Vespers. Now Amy and Dan have only days to fulfill a bizarre ransom request or their captured friends will start dying. Amy and Dan don't know what the Vespers want or how to stop them. Only one thing is clear. The Vespers are playing to win, and if they get their hands on the Clues ... the world will be their next hostage.

Les jeunes héros poursuivent la chasse aux 39 clés commencée à la mort de Grace Cahill. Les voilà en Autriche, la patrie de Mozart. Après plusiers recherches, Amy devine qu'un indice se chache dans le journal ayant appartenu à Nannerl Mozart, la soeur du compositeur ... Seulement le journal a disparu!" The race is on to find 30 Clues that safeguard a great power, and fourteen-year-old Amy Cahill and her younger brother, Dan, are shocked to...