You Need To Have ALL 39 Clues collected to continue ADD ME! MY AGENT CODE IS P2RMHMMPXP Add Me My Agent Code Is P66P94C4XP
The airport code for Brevig Mission Airport is KTS.
The airport code for Russian Mission Airport is RSH.
you have to read all the books of th3 39 clues which you can buy in schoolastic or other places, but the cheat code is P4G4MPNNXP
its realy easy all u have to do is get the score they tell u and then they will give u a code for your code book
arctic
Luke4
ARCTIC
it is lisbon
If your talking about mission 0 then it is luke1
the answer is LUKE1
death