Now that we've eliminated the deserters from Theramore, it's time to complete this operation. My local contacts have reported that the deserters base their operations in a ship moored on a small island to the southeast of the docks.$B$BArresting their leader, Gavis Greyshield, should cause the others to lose their will to fight. Find him within the ship and convince him to surrender. I wouldn't be surprised if he puts up a bit of a fight for show, but then surrenders when he understands he can't win.