Once you have correctly solved the switched-paintings challenge, you go to the Forgery Detection Lab in the Museum. You have to complete the tests to get the Supply Room key.
(see related question)
take the magnifying glass to the bottom right the middle ones signature is diffrent to the others
finish the tests and he will give u a key.
First go to skullduggery island,take your ship to a island called Keys World island and you will find the key of the chest on counterfeit island!;)
Counterfeit IslandNo, Counterfeit Island is real. In fact, it'd be better named as "Art Island".
you have to take the underground tour
You do not die on Counterfeit Island.
there is no mansion on counterfeit island
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
You have to get a job at the museum after you take the underground tour
Yes. Counterfeit Island was the tenth, and Reality TV is the eleventh.