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

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!