From publisher blurb:
A series of eight adventures for Newtonium Engine
A string of murders and strange occurences all lead beneath the city, and to the mysterious Lord of the Below who makes it their domain. The players must investigate these mysteries and fight mutated beasts, clockwork monstrosities and a gang of cutthrought thugs to get discover the secret master and thwart their inhuman experiments.
This book provides a series of eight adventures that can be run individually, or together to make up a campaign of interwoven plots and encounters that lead to a dramatic climax.
The Lord of the Below is an excellent way to get started with Newtonium Engine, giving you a number of introductory adventures and a short campaign to introduce you to the seting and system. There's also several new stat-blocks for a variety of clockwork creations and monstrous creatures, and a couple of pieces of new equipment you cangive your players, or use to beef-up the antagonists they face.