which door top middle either way when your in the right place( circular room look for a body near the rubble he should have a spell on him a reveal spell) use it and a lever appears pull it and you go down to the level withe lord lovis Talk to the book and continoue Dont forget to mindread lovis he gives you something for it also do his side quest for the soulstone thing it gives the best reward XD

Hope that helped

Where i come from ascesion to a higher rank is a simple assasination those who are Ranked Highest watch their Front their deaths come from thier back and they die naturally because a dagger in the back naturallyu ends their life.

I am not a safe place