Are you ready to save the world?
Thirteen-year-old Dan Cahill and his older sister, Amy, thought they belonged to the world's most powerful family. They thought the hunt for 39 Clues leading to the source of that power was over. They even thought they'd won. But they were wrong. A powerful new enemy, the Vespers, has emerged from the shadows, sending Dan and Amy on a dangerous journey that will take them from Rome to the ancient city of Timbuktu. If Dan and Amy don't stop the Vespers in time . . . the whole world will pay.
The 39 Clues: Cahills vs. Vespers
Book 1: The Medusa Plot by Gordon Korman
After the mysterious Vespers kidnap Cahills around the globe, they order Amy and Dan to steal a priceless painting in exchange for the hostages. The siblings rush to Italy to execute a heist that rivals the most famous art thefts in history. There's just one problem—the painting they steal is a fake. With the clock ticking, Amy and Dan have to track down the real painting before one of Cahill hostages pays the ultimate price. But Dan and Amy can't stop the Vespers alone. Each book comes with six game cards that unlock an online mission and allow you to join the fight against the Vespers. Are you ready?
The 39 Clues Cahills vs. Vespers, Card Pack 1: The Marco Polo Heist.
The 16 cards from this pack unlock a crucial mission — there's an artifact hidden in an ancient city, and you must find it before the Vespers do. The cards give you the gear you need, but it'll take more than gadgets to complete this mission. Only the bravest (and sneakiest) Cahills will have what it takes to save one of history's greatest treasures. Be sure you make it out in time—lives are riding on your success.