You think the column with platforms 9 and 10 looks interesting.

On closer examination of the column you find yourself running your hands over the brick work. There's a moment when you expect to find the rough texture of the brick underhand but are instead greeted by the feel of slightly harder to move air.

With a push you find yourself falling into the barrier and in a room lined with doors, labeled with various titles.

Are you ready to choose a door?