In [[Session 9]] Hear about thefts of crystals, the shear scale is huge. Could it be cultists or [[The Arcane Brotherhood]]. Is it linked to [[Korva's Lost Son]] and [[Black Swords]]? In [[Session 10]] we discover this is linked to [[Duergar]] In [[Session 14]] [[Tarin]] at [[Temple to Tempus]]. We let him know about the [[Duergar]]. He is concerned. [[Crystal Tower]] it was created close to [[Easthaven]] and made by an evil lich, some say it was a demon. Whoever controlled the tower was corrupted. Long ago some heroes destroyed it. The tower shattered and the crystals scattered, they were filled with evil power and corrupt those who hold them. These are the crystals the [[Duergar]] are trying to find.