It's out now!
Mystery Train is already open for all.
you find the key
its open now. go on poptropica and figure that out yourself
You can get up via the open hatch in the baggage car.
susas b anthony
As you keep playing the game the vent opens up, if you need specifics then go on poptropicasecrets.com
In front of the bed the briefcase was open instead of closed
you give it to the guy named named nikhola tesla when he get to prison to draw his room to see its difference and its the bag in his room that is open
in the drawing the suitcase is closed, but when you return to the guy's room after he is arrested, the case is open.
You go in the luggage car and the hatch on top is open. Go on top.
No one knows yet but the members only is September 9, so when the date comes it is most likely they will say on the blog the day it's open to all.
You get past the pinkerton guard by going to the luggage cart and look towards the roof- there is an opening! Get past the obstacles to the coal train and talk to Tesla. Open up the drawing he shows you, and circle the breifcase. Go out to search for who broke into it. Good luck!