I rarely encounter new stuff in this game, especially before the Battle Tower. But just now, I was clearing it out as I prepare to advance my main character into FoV (I like to keep my tower "untouched" - no opened chests, items picked up, etc. besides what is necessary to progress the story).
I noticed, on the 3rd floor torture room, there's a book I missed on a table on each side of the room: Research Notes, and Amusing Anomalies. And they act like "quest item" books (orange name, and read in a dialogue window instead of the normal "book" background), but aren't.
In addition, if you light the candles on each side of the room (they're on the same tables as the books), it opens a secret room in the center. Nothing amazing, but interesting nonetheless. Only has a chest with ~50 gold and some ingredients in it.
