First, you unlock the supply closet. Don't pass the security office until the lady walked away. When she does, run past and into the statue room. When the lasers pass, hide behind a staue. Keep repeating until you reach the main room. Click on the Scream. Answer the questions correctly in the morning.
You use the underground railroad starting from by the docks because they are doing construction in front of the entrance of the museum the go up the rope thing and you will be in the supply closet in the museum.
get it at night
Counterfeit Island
Night
you don't. the worker blocks you off.
hang from the light above it
Its a picture of the "Starry Night" by Vincent Van Gogh
it is at the museum on the top of the museum at..night.
Go through the underground tunnels.
From the underground tunnel.
when it's night, hang on the light above it.
its all ready out