WooferMom's Haunted Mansion

The Attic
You have entered a round room. The
stale air feels heavy and it is hard
to breathe. There is complete silence.
Directly across from you is an open window.
You can just see the moon behind the clouds.
To your left is a shuttered window and to
your right is another shuttered window.
There is a bookcase built into the wall
to the left of the open window and a closed
door to the right of the open window.
There seems to be some kind of glow
coming from the bookcase. Choose.