The first door on your right opens into a small room. You don't see
anything unusual and move on. You go on, room after room, door after
door. You find nothing of importance, until you reach the last door on
the left. You hadn't noticed from your point by your room that there
was a red light coming from the bottom of
it...
You look back to your right. Even though it was dark you could find
more interesting things behind those doors then the one to the left.
The green-blue light was beginning to scare you, anyway.