In the Selunite Resistance quest there is a reference to "met a man who wasn't there" in the Mason's Log. I've finished the quest but have no idea who or what that meant. In fact the entire quest seems pointless.
I think that everyone who said Antigonish is correct. But that quest only concludes in Chapter 3
in the House of Hope when you find the mason. You can either be kind to him letting him know that his towers still stand and the land is healed so the sacrifice of his soul was worth it or you can be an evil ass and tell him that no good came from his sacrifice.
