I'm at 49/52 missions for the Holland Valley with the whole area discovered and all locations, main mission finished and I'm tracking the Lighter and Comic Book missions, leaving 51/52, but as all locations are discovered I'm still missing 1 mission? Where is it?
o'hara haunted house counts toward holland valley though when highlighting it on map it shows as in henbane river. its the quest i was missing, hope that helps.