You can ask people for their card codes, and many have posted theirs online. A Google search with "39 clues agent card codes" would probably work.
It's not possible, sorry.
There are absolutely no cheats for the 39 clues website. AT ALL!
Yes, it is free to use the 39 Clues website.
Wormwood add me to your allies: P2749NM7XP
The title of the seventh 39 clues book is The Viper's Nest. My agent Code is P2J34GKXXP on the 39 clues website.
www.the39clues.com
My card number is P2JC7GD2XP. I am a Tomas. -Hammyrocks123
the books will only give you ten clues so the cards fill in the gaps along with the 39 clues website
No.
wait.
its up
Once you get the code, go on to the 39 clues website and create an account! After you do that that click MY CARDS and enter the code.