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Castellan Crowe

by David Annandale

The Castellan Crowe series by David Annandale has 2 known books (2 published) and is best read in publication order, starting with Warden of the Blade (2016).

Books
2 known books (2 novels)
Published
2
First published
2016
Status
ongoing
Shelved under
Science Fiction
Last checked

Start here: Warden of the Blade (2016) — then read straight through in publication order.

Book one

Cover of Warden of the Blade

Warden of the Blade (2016)

Reading order

The date order of published books and any announced future entries — the default way to read the series.

  1. Warden of the Blade

    Novel

    David Annandale opened his Grey Knights duology in 2016 with Warden of the Blade, sending Castellan Garran Crowe's Purifiers strike force against a heretical crusade led by a former battle-brother, testing how far their doctrine of purity through destruction can be pushed.

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  2. Castellan

    Novel

    Castellan followed in 2018, running 336 pages to pick up directly where the first book's crusade left off, now with the Purifiers emerging from the galaxy-splitting Cicatrix Maledictum into a transformed Imperium.

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About the Castellan Crowe series

Castellan Crowe is David Annandale's Grey Knights duology, following Castellan Garran Crowe -- a named character drawn from Warhammer 40,000's tabletop lore -- and the Purifiers, the most zealous and uncompromising branch of the Imperium's secretive daemon-hunting Space Marine Chapter. Warden of the Blade (2016) sends Crowe's strike force against a heretical crusade led by a former battle-brother, testing how far the Purifiers' doctrine of total purity through destruction can be pushed before it consumes its own wielders. Castellan (2018) escalates dramatically: the Purifiers are caught inside the Cicatrix Maledictum, the galaxy-splitting warp storm that reshaped the setting's status quo, and emerge into a transformed Imperium where daemonic plots they thought long since crushed are on the verge of coming true.

Where Annandale's Yarrick series is an origin story and his standalone Warhammer Horror work leans on dread, Castellan Crowe stays close to the Grey Knights' core premise -- fanatics who fight monsters by refusing to compromise with anything monstrous, including within their own ranks.

Frequently asked questions

How many books are in David Annandale's Castellan Crowe series?

Two: Warden of the Blade (2016) and Castellan (2018).

Who is Castellan Crowe?

A named Grey Knights character drawn from Warhammer 40,000's tabletop background -- a Castellan (senior officer) of the Purifiers, the Chapter's most doctrinally extreme branch, who leads the strike force at the centre of both novels.

Do I need to read Warden of the Blade before Castellan?

Yes -- Castellan continues the same crusade and the same cast directly from Warden of the Blade, now reshaped by the setting-wide Cicatrix Maledictum warp storm.

Is the Castellan Crowe series finished?

A third volume was reportedly discussed by the author around the second book's release, but no third book has been published or announced with a release date as of this curation (August 2026).

Reading order last verified .