Hat of the Mad.

[disovler]

Is it true you can't complete Hat of the Mad quest? because you have to go to a prisonor but you can't get trough a door because it's locked. the prisoner gives you the key to go trough the door at the mage room quest

 

[Xon vanetta]

There is a key in one of the barracks in mintvallin for that prison door.
in some box