SureAI

I am trying to complete the Renegade brother but cannot seem to find any more of the quest. Then when i checked the map to see where I have been, it does not reflect the actual geography of the dungeon
Here is where I am in the dungeon which should be a room leading to a passage
Yet what I am in is a curvy passage facing a brick wall

So I have been everywhere where I can go in the dungeon

[+]

(I have killed Sardren)

but can't find the quest objective.

Any clues please

No matter.... went out and walked around then went back in... somehow got to where I had to go... thanks!