In the manor in Witch Woods, next to the creepy waxworks, there is a door to a little room with a red chest and a creepy skeleton painting. That door is blocked for me. I think I've turned every switch in the manor on and I still can't get in. Any hints? I do have the Lucrecia key.
Go back downstairs to where the crack in the wall is that leads to the spider nest where you picked up that Lucrecia Key. Just instead of going in there again go left to the Butcher House. There's a skeleton in there that has the Dead Key. This is what you need to open the locked door.
Can you be more specific about exactly where you are when you are examining these "waxworks". The reason I ask is that I have very extensive notes on how to complete this game, and nowhere do I have the word "waxworks". Without more details I can't help.