what you have to do to get past this place is go to the place where there is a statue on both sides of the room. make the statue on the left , face left and make the statue on the right , face right(i think these are the right directions but i may be wrong.) the room with these statues in is to the left of the screen where you move the bookshelves. when you move the statues correctly a stairway will appear. when you are up the stairway you will fight a boss. if you collected most or all of the blood stones the boss should be weakened and die easily.