you enter in the reusable code:P2JJWKCJXP
The card that can be used to unlock all 39 Clues Cards is to put in P63726DJXP
The code to unlock this clue is g5hj897z21
The answer is 'password safe'. (Just click on 'Hint' many times!!!)
Actually, their is not a code for this card. The only way to get it is by winning level 20 on the iPhone/ iPod Touch app, once you beat level 20, you enter your username and password into the iPhone/ iPod Touch, and it will add the card to your account. (iPhone/ iPod Touch app called "The 39 Clues: Madrigal Maze)
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The code to unlock this clue is g5hj897z21
the answer is P434wd2xxp
you have to get the ultimate card pack
password is dragon
password is dragon
Password is dragon
You have to add the cards of the books and card packs. Card combos unlock clues. Complete the missions to unlock more clues. When you have all the card combos complete and you have played all missions you will have all the 39 clues. Don't use the replicator cards if not necessary. Use them when you need to unlock a card when it has not been unlocked even after you have added all the cards of the books and card pack.
a card combo can unlock a clue
it is a 39 clues card that you have to unlock on the39clues.com
Password-- safe
There is nothing called a code book. The 39 clues cards have codes by which you unlock cards. If you mean Agent Card Code then you can get your agent card code in the agent card option in my cards. My agent card code is P2FHHNDHXP
The card that can be used to unlock all 39 Clues Cards is to put in P63726DJXP