Crestfallen Studios

I got my girlfriend into The Way recently, got up to episode 6... she beat the Joker, and got the manor key from it. I was just wondering... what exactly does it do? o.o We have been all throughout the manor, and can't seem to find a use for it anywhere. Tried searching these forums, couldn't find anything, and walkthrough link is down.

The walkthrough is up for me... http://jeramyu.homestead.com/files/way_faq.txt

To answer your question directly though, you don't use it in the manor. Not sure how far you played past it, but if you just keep playing forward in the story you'll eventually find yourself in a passage with two metal doors. The key opens the right one.