The 39 Clues: Cahills vs. Vespers Card Pack 1: The Marco Polo Heist

Are you ready to save the world?

The Cahills were the most powerful family history had ever known . . . until they met the Vespers. Now the fight is on and the world hangs in the balance. 16 explosive evidence cards unlock a globe-trotting online mission. Follow the ancient trail of explorer Marco Polo and the warlord Kublai Khan to stop a Vesper plot ? and discover their darkest secrets.

Your Mission:
" Crack codes and solve leads
" Travel the world to interview suspects
" Find the golden passport
" Complete a daring heist
" STOP THE VESPERS!
Cards, 39 pages
Published on August 30, 2011 by Scholastic Inc.
ISBN-10: 0545316405
ISBN-13: 9780545316408
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