I cannot restart the quest called Mission Possible but not Probable. I play a rogue and abandoned the quest thinking I can just go get it again. I cannot, I tried /Salute -ing Shenthul to try to have him give me the quest again. Didn’t work. I need these poisons as they are a large part of the rogue.
(I abandoned the quest because I wasn’t aware of the fact that I have to pick pocket him before killing the elite on top of the tower.)