I'm working on some of the backstory bits for my PC's in the Runelords campaign, and one of them has requested that I build in something about his nemesis (for his Story feat).
We've worked up that he stole the keys from the Fish Tank belonging to Jaster Fralino http://www.pathfinderwiki.com/wiki/Fish_Tank and that when he re-enters Magnimar, he's going to go find his old haunts, and have a side quest to get to the bottom of what the keys open, and kill Jaster.
Does anyone have any ideas what the keys open though? I'm drawing a complete blank....