With news of Horus's treachery spreading across the galaxy, the Great Crusade grinds to a halt as the primarchs and their Legions decide where their loyalty lies - with the Emperor, or with the rebel Warmaster. The Dark Angels, too, face a time of testing, both among the stars and on their home world Caliban. Luther, once Lion El'Jonson's trusted second-in-command, now languishes as an exile in all but name while his master struggles to thwart the traitors' advance upon the forge world Diamat. But an ancient evil gathers its strength beneath the surface of Caliban, and the First Legion will soon be thrust into a deadly conflict where all that they know will be cast into doubt.
- ISBN10 184970810X
- ISBN13 9781849708104
- Publish Date 28 August 2014 (first published 6 July 2009)
- Publish Status Active
- Out of Print 24 October 2022
- Publish Country GB
- Publisher Games Workshop
- Imprint The Black Library
- Format Paperback (US Trade)
- Pages 416
- Language English