David Annandale
Warden of the Blade
Castellan Crowe (series) part 1

Castellan Crowe of the Grey Knights bears a heavy burden – to carry the cursed Blade of Antwyr, a weapon imbued with dark power. For the first time, discover the origins of this dread task and why only Crowe can be the one to carry it out.
Warhammer 40k
novel

Also in:
Grey Knights Digital Bundle