You can now find out more about Mystery Train Island by going to its info page. Here’s the link: http://www.poptropica.com/island-tour/mystery-train-island.html.
The Creators have also posted about it on their blog. Here is the post:
If you haven’t had the chance yet, check out the Mystery Train Island info page for more details about this mind-bending mystery!
And keep an eye out right here on the creators’ blog for even more clues about the next Poptropica adventure. The train will be leaving the station before you know it!
This is what Mystery Train’s Island info page says: How do you solve a mystery when everyone is a suspect? It’s 1893, and some of the world’s brightest minds are traveling by train to the World’s Fair in Chicago. But after a dastardly crime puts the fate of the Fair in peril, only you can piece together the clues and collar the criminal. All aboard for a whodunit that will keep you guessing until the last twist of the tracks!