Edit: I just replayed this quest. It turns out that you can finish the quest (possibly losing some XP, didn't do the tally) by doing the exceedingly simple and obvious: Kill Carver. The log says that the murders will likely never be resolved now, and that is exactly what I wanted to achieve. Considering that the alternative, telling on the cook to Carver, will probably result in the magisters finally going over the edge and launching a full-blown pogrom with lots of innocent dead, not the worst outcome imo. (Carver's loot was also far better than the paltry quest reward he offers, just saying... certainly didn't influence my choice...)

Last edited by Terodil; 20/09/17 11:57 AM. Reason: Replayed.