You go up to the front of the train and click on the conductor and he will ask you if you want to visit another island.
just leave the fair and that's that.
The 21st island on poptropica will be mystery train island.
See the engineer (he's in the very front of the train) and click on him and he'll ask if you want to get off the island.
depends which stage
Mystery train island
HJ
In the janitors closet
It was revealed in late July, 2011 that the 21st Poptropica island would be Mystery Train Island.
restart the page
The thief is the French reporter.
The lady from France. lol.
Mystery Train island is came out on the 9th of September. Only members were aloud to play the whole island. Nonmembers had a demo. Mystery Train Island is coming out on the 7th of October for everyone.