The thirsty prisoner keeps begging me for water, and despite that fact I have bottles of it, cups of it, and even a bucket of water, I can't give it to him. I read that it's in the kitchen, but I drank that myself in a 'let's see if this messes with my stats' drinking binge (I chucked up!). Please tell me it's NOT keyed to just a single special bottle. Alternatively is there another way of getting that skill book from him. Pickpocket level 3 doesn't seem to work.
Thanks