by going in
Yes there is a secret mission on Club Penguin.
mine shack
you have to click on the side of the mine shack
It means that your penguin is doing a secret mission (You have to be a secret agent which is the secret agency).
mogul
Agent HQ
ya
the secrete word is mogul
Just go on a mission
If you are talking about G's special mission the secret word is "mogul"
The secret message on G's Secret Mission is........................................MOGUL
Mogul