Gramarye & Regret
Adams are Topsiders, aka normal people, who have been ensorcelled or somehow dragged into the faerie world of London Below but who are not transformed by the experience. Their innocence becomes their shield, defending them from the malice of fey and monsters alike. Most of the time, that is. Some do get eaten after their first step into a goblin market, but those who survive and wander the faerie trods without fear become Adams, like original man without sin or knowledge of good and evil. If they live long enough they become Saints and may bestow benedictions upon those not of faery blood, but their suffering never ends for they cannot return to the land of mortals anymore and must satisfy themselves with the twisted demesnes of deeplands.