The Grey Knights strike with overwhelming force, each of them a mystical warrior whose martial prowess goes hand in hand with his psychic power. Decked out in protective seals and plates of pursilver and adamantine, equipped with crackling Nemesis force weapons and devastating psychic ammo, they are relentless destroyers. It cannot be otherwise, for this Chapter is waging a war in the utmost secrecy against the Dark Gods of Chaos to prevent the succumbing of reality itself.

The Codex: Grey Knights is an essential book for valiant collectors looking to defend the galaxy from the devious plans of demons. This grimoire is filled with atmospheric illustrations, fascinating history, inspiring photographs, and contains the rules you need to banish your enemies from your games of Warhammer 40,000. You'll find datasheets, Detachments, narrative Crusade rules, and a Patrol section that is enough on its own to practice this tight, tactical game mode. However you like to collect, paint, and play, this book will guide you as surely as the Prognosticars of the Chapter.

• Forbidden history detailing the long past and unusual organization of this most secret Chapter
• Disturbing illustrations and dynamic photography that can inspire your collection and spark your creativity
• The rules for playing the Grey Knights in games of Warhammer 40,000, with 25 datasheets, five Detachments, and the Infinity Portal rule common to the entire army
• A set of rules to launch your own narrative Crusade, track down impending demonic incursions and thwart them
• A Guide to Painting Your Patrol and the Rules for Playing Crowe's Sanctifiers in Skirmish Games