Unfortunatly, each code can only be used once, meaning if some one gives you one they would have allready used it and it will not have any use.
In A Book In The Top Floor Of The Coffee Shop
with a key!
KEY in Secret Agent Code.
In a book on the bookcase. In the lounge at the coffee shop.
Yes there is a secret mission on Club Penguin.
There are two secret rooms in club penguin, which one are you talking about?
You completely finish the puffle game and you get a key.
because you stink
this video gives a key .you write the key on clubpenguin.and you win a agent helmet
There are tasks on Club Penguin if you are a secret agent.
The secret code to club penguin is clubpenguin
There is no president in Club Penguin but you can join the secret agent club.
It means that your penguin is doing a secret mission (You have to be a secret agent which is the secret agency).