After the painting is stolen, you will find the security guard at the Clown Store. He has his time card that shows when he left the gallery. Get it and you can find a photo of the thief on the museum's Security Room videos.
Counterfeit IslandNo, Counterfeit Island is real. In fact, it'd be better named as "Art Island".
You do not die on Counterfeit Island.
there is no mansion on counterfeit island
Night
In the clown store
There is no camera as an item on Counterfeit Island.
You will have to swim for it : the lighthouse is on Big Nate Island, not Counterfeit Island.
you go back on counterfeit island
Yes. Counterfeit Island was the tenth, and Reality TV is the eleventh.
hang from the light above it
the curator isn't on counterfeit island... shes in early poptropica...
There are no snowballs on Counterfeit Island. (see the related question)