You begin looking at a lamp just inside a window. Turn to your right and move towards the ominous dark door. Once you get near it and it becomes less ominous, turn to the right and move into the door on the right of the little hallway area. Once you're inside that door you should see a zebra skin rug, and other things, I suppose, but you'll want to move directly one step forward towards the double doors that are closed inside. Once you're standing in front of those double doors, you're done.