Slay Harlan Sweete in the Freehold dungeon.
Hey, uh, I don't usually ask for help with personal business, but I know when I'm outmatched. Someone's gotta take down Harlan. He's a maniac. The things I saw him do back in the day... that's why I left Freehold in the first place. H-hey don't think of it as a favor for me--even though it would be a HUGE favor--think of it as making the seas safer for everyone, or something noble like that. <Flynn leans in and whispers.> Plus there's a big fat bounty on his head!