Down the hall to the left you see a door, on your left; the room neighboring this one. You also see a doorway, open, at the end of the hall, and quiet footsteps, perhaps someone walking about, from somewhere beyond. If memory serves, that is probably the main store area of this building (which is obviously closed at the moment). Visible through the door frame is a slanted wall, perhaps the staircase going up, and open store space to the right, where nothing is visible yet.
Gelvin slips out of the room behind you, headed the other way, and then he taps your shoulder and whispers 'last room down here is clear, I'm behind you'