Oh, I'm on the 2nd run through. I've done that part where the door opens, went through eventually coming to the floor above the library, then taking the trapdoor back down to the 3 candles. I just can't figure how to get them to open the bookcase passage.
I read there's supposed to be a book in the bookcases that can open the passage but I can't find that either.
This is dumb.