The Grey Knights strike with overwhelming power. Each mystical warrior is as skilled a fighter as they are a capable psionic. They wear protective armor made of true silver and adamantine and are equipped with thunderous Nemesis psi weapons and devastating psionic ranged weapons. They are all merciless destroyers. And it could not be otherwise, for this order wages a secret war against the Dark Gods of Chaos to avert the death of reality itself.

The Codex: Grey Knights is the essential book for determined collectors who want to protect the galaxy from the sinister plans of the demons. This book is full of atmospheric images, fascinating background material, inspiring photographs, and the rules you need to banish your enemies in Warhammer 40,000. You'll find datasheets, contingents, narrative crusade rules, and a dedicated section for combat patrols to help you engage in small-scale tactical battles with your collection. This book will guide you as surely as the predictions of the Order's seers, no matter how you choose to collect, paint, and play your Grey Knights.

In this 104-page hardcover book, you'll find:

– Forbidden background knowledge about the long history and unusual organization of the most secret Space Marine order

– Disturbing artwork and dynamic photographs to inspire your collection and spark your creativity

– Rules for the Grey Knights for Warhammer 40,000, with 25 datasheets, five contingents, and the Gate to Infinity army rule

– A ruleset to start your own narrative crusades to track down and banish impending daemon incursions

– A painting guide for your combat patrol and rules for using Crow's Purifiers in skirmishes

This book also includes a one-time-use code to access the contents of the Codex: Grey Knights in Warhammer 40,000: The App.