We pursued Marcus into the Tiefling mausoleum and turned him into a nutritious/toxic goo. We almost didn't all maybe die a lot. Avis found the tomb of Aurianna Nocturne, "the final daughter of the House of Night". Her name and sigil matches Avis' pendant. This pendant is made of onyx, a highly illegal substance to own. As we decide to leave the tunnels for the day, we noticed Aeson is no longer there.