Mordant Grimsby at Swamplight Manor wants you to plant the torch at the end of the dock and defeat anything that appears.
1x Witch Hill Cleansed
The torch is ready. Plant it at the end of the dock and be prepared to face whatever comes forth.
I have no idea what the torch's smoke may reveal... if anything emerges at all. I must say, I have my doubts about this kind of folk magic, but we haven't time for anything else. For your sake and Jarl's, I wish you luck.