Attempt to speak to the banshee (Q).
Take the KNIFE (R).
Examine the hole in the floor and move the two boards; take the GLASS CUTTER (S).
Back out; go up the stairs on the right and then through the door on the left.
Examine the cabinet and use the GLASS CUTTER on the glass; take the 2nd bestiary scroll and the KEY (T).
Examine the globe and turn it. Use the KNIFE on the X; take the GARGOYLE (U).
Examine the chest of drawers and place the GARGOYLE on it; take the SAW (V).