From the back of the book:
WE WALK ALONGSIDE YOU IN THE NIGHT...
The Night Companion is the first sourcebook for the Night Shift: Veterans of the Supernatural Wars Role Playing Game, the old-school RPG of Chosen Ones, Witches, Survivors, Psychics, and Something Weird. Within its pages, you will find:
Four new character classes: the Divine Warrior, the Mystic Martial Artist, the Psychic Gunslinger, and the and the Spirit Rider
Rules for playing supernatural species including Celestials, Driven, Ghouls, Infernals, Lycnathropes, and Vampires, expanding upon the "Supernatural Race" option in the core rulebook
New options for generating abillity scores for normal, gritty, and cinematic games
Rules to convert your game from class-and-level to entirely point-buy
An alternate alignment system focused on good, evil, light, and dark
Guidelines to convert your game to a unified mechanic - both d20-based and and percentile-based are covered
Enhanced combat rules: variable weapon damage, adding range increments, weapon classes, grappling rules, jumping, drowning, suffocation, poison and disease, and more
New Arcane Powers and spells, plus enhanced rules for ritual magic
A GM section that goes behind the scenes of the system, talks about keeping track of your play style options, gives guidelines for creating cults and secret societies, and discusses tropes of sub-genres of horror and how to use them in your game
Dozens of new monsters, enemies, and NPCs for your game
Blow the doors off of your game with The Night Companion!