Behind the abstract painting.
You pull back the corner of the painting on the wall and SCREAM!
The painting turns up in the Inspector's house in the Countryside.
it is hidden behind a painting in the inspector (black widows) house
In the museum.
The Scream
the picture of the guy that will steal the scream!
it is on the top level in the middle of the museum.
You go down and go to the scream.
you find a splattered painting and in the top right corner the painting is peeling and "the scream" painting is behind it
there is no curators house. if you're talking about the dectives house on counterfeit island, you don't open it. you peel the painting off the scream by a "slightly peeled corner".
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.
On the second floor is an abstract painting. Pull the loose corner and it will peel away, revealing the stolen painting.