buy a book and go to 39 clues.com and make an account and then enter the codes on the cards!
they are cards that you can unlock clues and replicators for.
clues are just things to help you with the clues
nooo not really
there is no 49 clues book it is 39 clues
The code to unlock this clue is g5hj897z21
Tungsten.
The name of the 10th 39 clues book is Into The Gauntlet.
The title of the seventh 39 clues book is The Viper's Nest. My agent Code is P2J34GKXXP on the 39 clues website.
Online, the second clue in the 39 clues is hydrogen. But in the second book of the 39 clues is tungsten
the name of the 5th 39 clues book is the black circle
The eighth book in The 39 clues series is 'The Emperor's Code.'
The clue is iron salute in book 1 of The 39 Clues.