From the front cover:

You have been directed to stamp out the rising evil in the kingdom. Its source is the foul undead inhabiting an ancient cairn, and their king - whom legends say will not die!

Cairn of the Skeleton King contains two challenging scenarios in one: Cairn of the Skeleton King and Warrens of the Ghools. If you can defeat this hold of evil, then the secrets of another realm of terror will be revealed - equally evil and deadly, and more ancient than the lands you venture beneath!

The two levels in this module can be run as a pair of stand-alone adventures, or be run together, and are designed for a party of 4-8 player characters from levels 4-7. Cairn of the Skeleton King can also be combined with RJK-2 Tower of Blood to form an extended campaign into the depths of the earth.