Bummer that we didn't make it over to the Harbormaster before this, I was hoping for a little more information on the dead elf sailor. The best theory I've heard thus far is that the dead elf was a Harper in disguise, perhaps investigating a cult led by a white dragonborn sorcerer helped by his top-hat buddy and the brawny gravedigger. I voted for looking up Crane in Sewer Keep since we definitely could use some help right now and charging into the cultists' lair strikes me as bad tactics.