In Counterfeit island, you chase him.
the thief is in the jazz cafe next to the stage.
the thief went on a boat
The thief is the French reporter.
The thief is your mom. She is secretly playing Poptropica so you could stop playing the piece of sheet that it is.
you have to catch a thief on counterfeit island and when you catch the thief you will get a medallion
On the train. For one of them.
you go to grannys house
Mr Silva
The lady from France. lol.
the key card the thief you chase on scooters
The dude with only a mustash
the code is thief is mr silva