Waters of Oblivion

Publisher's blurb:

Waters of Oblivion is typical of my adventures. A variation on a theme. The party finds a trinket that feels and talks. Something horrible has happened, but it can't quite remember what it was exactly. Then the party explores an underground home of a researcher named Tyber. When those who focus on their goal with fanaticism, they lose sight of not whether they can do it, but rather should they do it. Tyber discovered his answer beneath the waters of Lethe.