This is a mini run area designed for 2-3 level 50 characters.
To begin you should head to 'Amidst Empty Buildings' in Kansas, beat up the ghost thats there, then head east and north and attempt to take an item in that room, which spawns another ghost. Kill it and take the key it drops and return south.
Unlock east which will cause a three dead delinquents to rush you, one of these will potentially flee and take a key you need with him, so target 3.delinquent and try to keep it bashed, use AoE attacks if you have them, and generally kill these three fast.
And then head east through the prison picking the doors north and south and killing all of their contents as you go. One of the dead delinquents you kill on this floor will also have a key which will unlock the up exit in the middle of these rooms. Once you have it and have headed up, again pick doors and clear rooms.
In the central room after you go up the first time you can punch hole to scare a mutant rat into popping out.
The room east has the prison warden.
And assuming you killed all three delinquents at the start the room up has the undulating ball which you must kill to obtain any of the items from the pits around the prison. Taking any of the 7 items from the pits will cause the building to collapse and all of the other 6 items to disappear. Find the one you want and make a quick exit.
If you are doing this for the heroic bow any of these items will work, and when you return you put the item back in the pit to spawn the angry spirit.
(this needs updated a lot because I STILL dont know how to open the second up exit door, I dont have details of mob hps/xp etc, and I don't have the details about items you need to spawn the angry spirit on a second run through)