Screenshot of this can be seen at: https://steamcommunity.com/profiles/76561198020616371/screenshots/?appid=1096530
I got to the top of the tower, went into the chapel? room, then across and took a long rest.
Went to the other side and got to the library. Noticed the single book and interacted with it to open the Laboratory.
BUG#1 - my character ran out into the hallway to interact with the book instead of pushing the ghost out of the way and accessing it from the bookshelf.
I then went the salon, then into the lab. (I did not open the door at the end of the hall.)
Entering the lab triggered a fight with four ghostly guardians. Upon killing the last one, there was a brief cutscene of the Master standing up with some bald dude visible for a second. Then my characters were standing in front of the master. It talked about being incapacitated and not recognizing some evil. And then I got stuck in the screenshot above. No dialog options, but I couldn't move or do anything else. (Well, I could open inventory, but that didn't really help with anything.)
So I think it was stuck somewhere between conversation and exploration. I'm guessing the bald guy I saw briefly in the cutscene was Razan, although I don't know for sure.