You get the key late in the game, after the activities of the first night. You do not have to look for it.
go to the second floor and tear the painting
It is in the Inspector's house in the Countryside. There is no way to enter the house. You will be given the key to it later in the game.
The key card does not open any house. You use it much later to enter the underground treasure trove of the black widow.
You only pass there once, taking a green balloon to the crying French boy. When you get the key from Early Poptropica, you can enter.
It is in the countryside of counterfeit island.
you go out the door!
The Black Widow (veuve noire) is posing as the police inspector, whose house is in the Country Side. It is on the far right of Counterfeit Island.
You go to the city docks and enter it from there
After you get the key from the curator, enter the Inspector's house in the CountrySide. Go upstairs, where there is a painting on the wall. Part of the painting is peeling, and when you click on it...(GASP!) It's The Scream!Then the lights go out.
On The Country Side Of Counterfeit Island
Behind the abstract painting.
Its by the jazz house, or the tunnel. Its in a trash can.