Shadowknight
Crusader Olus is stationed just outside the Tink 'N Babble. He has slain many a Troll (or similar) that thought they had acceptable faction with Crusaders of Greenmist. In absence of evidence to the contrary, the problem seems to be with Grype, who spawns at night inside the Tink 'N Babble. If he aggros as you walk past then Olus will be all over you.