Skybolt, you get the Zandalor quest when you've been in the castle via invitation and survived Iona's dungeon. Please, how far are you the game? Did you visit this dungeon already?
Yes, Rob/Ducal Inn will flag the sewer entrance for you = but it's the Ars Magicana sewers.
Ouch, so you met no imp upon entering the castle? How did you enter? Via invitation or by cheating?
