Once you get into the Inspector's House, you go up to the second floor and click on the pulled-back part of the painting to reveal the Scream.
Once you have entered the Inspector's house in the Countryside, the location of the missing painting becomes painfully (yes, painfully) obvious.
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.
Once you have found and chased the thief, the investigator (Chief Inspector) is nowhere to be found. Once you have the key from the curator, you can open the Inspector's house in the Countryside to locate the painting.
Once you have the key from the curator on Early Poptropica, open the Inspector's house in the CountrySide and find the missing painting (not well hidden). You will soon be where you want to go.
You only go there twice. You pass once when bringing the green balloon to the crying boy. Then when you receive the key from Early Poptropica you can go inside.
Once you have the key from Early Poptropica, enter the Inspector's house in the countryside. On the second floor is a garish painting with one corner coming loose. Click on the peeling corner and you will find that underneath the painting is the stolen masterpiece "The Scream" (...then things get interesting).
Once you get the key from the curator, go back to Counterfeit island and use it at the Inspector's house.
Once you have gotten the keycard after the scooter chase you go to the art museum on early poptropica island and this lady will give you a key that goes to the cottage on the countryside.
Once you have used the key to open the Inspector's house, go to the second floor, where a painting has one corner hanging from the frame. Click on the corner to uncover the hidden painting in the frame.
Once you have given a green balloon to the kid in the Countryside (not what you expected), the man at the Internet Cafe will talk to you. Return his tickets and he will give you one to use.
Get a green balloon from the Clown Store and take it to the crying boy in the countryside. (Be careful what you ask for...) Once he floats away, go back to the cafe.
Once released, the island is available by using the island map.