The 39 Clues Double-Dealing Tour
39 Clues hidden around the world guard the source of the Cahill family's immense power and it's up to YOU to find them.
It's 'Cahill vs. Cahill in a worldwide race to find the Clues . . . and beat the competition.
Seven members of the Cahill family have been kidnapped and the Vespers are demanding an impossible ransom. Dan Cahill and his sister Amy have just days to steal some of history's most famous works of art and hand them over to the Vespers. But the Vesper plot goes deeper than the Cahills know – they're after nothing short of world domination. Each The 39 Clues: Cahills vs. Vespers book comes with 6 game cards and unlocks and online mission.
The Cahills vs. Vespers cards provide the leads you need to stop the Vespers! Each card comes with a unique identification code. Enter the code on this website to create your own online card collection.
- Each book comes with a set of 6 cards and unlocks a mission to unmask a Vesper.
- Each Cahills vs Vespers Card Pack contains a single set of 16 cards and unlocks an extreme mission to track down a lost treasure.