From the publisher:
"Nightlands™ takes the players into the strange and frightening domain of the demonic Nightlords! Places like Doom Harbor, a twisted version of New York City, and Devil City, the Nightlands' evil, mirror image of Los Angeles, and others. Discover the true power behind the Ba'al and their plans for Earth and the Nightbane.
* The world and people of the Nightlands™ revealed!
* The Hierarchy of the Nightlords and villains galore.
* New character classes, demonic minions, & strange powers.
* New Nightbane™ Talents, Morphus shapes and data.
* Campaign and adventure ideas."