Hello,

I've started playing this game yesterday and I managed to get out of jail and find the jail master key. I've been in the sewers, and found several pieces of clothing and a ladder that takes me back to the drawbridge.
Anyway, in the jail, close to the sleeping guard there is a hallway that leads to an empty cell (I wonder why I need the master key to get into an empty cell, but whatever) and a staircase that goes down to a locked door that requires the flooded cell key to unlock.
I've searched all around the jail and the sewers for that key and couldn't find it. Does somebody know where I can find it?

go out side and up top to find the one who let you out of your cell