oh, good, a hidden door behind the book shelf opened up leading you through a secret passage out of here. where might it lead you?
you enter through the door and as as you come to the end of the pass way, you find yourself looking at a strange combination lock, with five large wheels.
but instead of numbers, it seems like it has the entire alphabet on each wheel to turn. another password is required.

there is a note above it:
have you considered that you are in a space between now? or perhaps before something begins or after something ends? or is it all the above? either way, you have cover here. right in front of you.