from the introduction:
Shadows Under Steinholm is a flexible, non-linear introductory adventure for four newly-created or slightly experienced characters. The focus od this adventure is providing an outline for introducing players to the Skaven, and their insidious ways.
This adventure is set in the small town of Steinholm, but can be easilt adapted for any human settlement. Using the Children of the Horned Rat supplement is suggested, but not necessary for running this adventure.