The noble Castellan Crowe of the Grey Knights Chapter must wield the cursed Blade of Antwyr, an indestructable weapon imbued with evil daemonic power.
Castellan Crowe, Brotherhood Champion of the Purifier order of the Grey Knights, bears a heavy burden – to be the warden of the dread Blade of Antwyr. Its malevolent voice is forever in his head, trying to crack his resolve, urging him to unleash a power he must never use. The toll is terrible – how long before the incorruptible Crowe is at last defeated? Under the command of Castellan Gavallan, Crowe and his brother Purifiers bring purging flame to a daemonic incursion that threatens to consume the world of Sandava I. However, what awaits them there is more insidious and more powerful than they imagine, and they must reckon too with the machinations of the Blade, as it seeks to destroy its guardian and drown the galaxy in blood.
David Annandale is the author of the Horus Heresy novels Ruinstorm and The Damnation of Pythos, and the Primarchs novels Roboute Guilliman: Lord of Ultramar and Vulkan: Lord of Drakes. For Warhammer 40,000 he has written Warlord: Fury of the God-Machine, the Yarrick series, several stories involving the Grey Knights, including Warden of the Blade and Castellan, as well as titles for The Beast Arises and the Space Marine Battles series. For Warhammer Age of Sigmar he has written Neferata: Mortarch of Blood. David lectures at a Canadian university, on subjects ranging from English literature to horror films and video games.