The key doesn't open the secret compartment! You click on the different panels on Mark Twain's wall to find the compartment. The key is for luggage.
in order to open his compartment, go to the wall where you see you can click on, and go to the 2nd row of that wall. then go to the last square in that wall. click that square and you have found what he hid......
The compartment is in Mark Twain's room on the right side of the room on the wall. You have to click each wall panel until you find it.
you have to figure out who stole the camera.
The porter is at the front of the train.
what to do after you pass the guards of Chicago and you get next to the snoring man on poptropica mystery train
lugeg on poptropica
find it
Stop playing Poptropica. Loser...
depends which stage
The Le Monde reporter is the mystery person.
you don't have to
its at the end