From the introduction: This adventure is a sequel to The Crystal of Juiblex 1: Kobold Tea Party. The kobolds have temporarily found a new home in an abandoned Drow crypt and embalming center. Unfortunately for the kobolds, the area is fraught with danger and they are being pursued by the intrepid players. Little do both parties know, but the true danger lies in the crystal pilfered from Onson's manor. The Call of the Crystal is the second part of a 6-part adventure series designed to take characters from 1st through 4th level. This adventure also can be used as a standalone adventure.