# Flames of Betrayal

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![Flames of Betrayal](https://quivercdn.com/covers/games-workshop/james-swallow/flames-of-betrayal_978-18-3609-021-2-5bda9ed8.webp?v=2026-11-10%2000%3A21%3A10)

- Authors: [James Swallow](https://www.bookquiver.com/james-swallow), [John French](https://www.bookquiver.com/john-french), [Nick Kyme](https://www.bookquiver.com/nick-kyme), [Dan Abnett](https://www.bookquiver.com/dan-abnett), [Gav Thorpe](https://www.bookquiver.com/gavin-thorpe), [Guy Haley](https://www.bookquiver.com/guy-haley), [Chris Wraight](https://www.bookquiver.com/chris-wraight), [Aaron Dembski-Bowden](https://www.bookquiver.com/aaron-dembski-bowden)
- Language: en_US
- Published: 2026-07-30
- Genres: Science fiction, Fantasy, Graphic novel / Comic book / Manga: styles / traditions, Children’s, Teenage and Educational

## Description

In the ashes of Terra, the wounds of the Horus Heresy fester. While the conflict between Horus and the Emperor of Mankind has reached its bloody end, humanity must now navigate the consequences. If anyone is to survive this Era of Ruin, they must claw their way through the remnants of betrayal, carnage and destruction. The scars of the Siege run deep in the wake of battles like that of Nathaniel Garro, forced to face his father, the monstrous traitor primarch Mortarion, during the height of the conflict. Some of Black Library's most beloved authors explore the death throes and immediate aftermath of the Siege of Terra, including Dan Abnett, Aaron Dembski-Bowden, Guy Haley and more. This omnibus contains the novella Garro: Knight of Grey by James Swallow and the Era of Ruin anthology.

## Editions

### Flames of Betrayal

- Publisher: Games Workshop
- ISBN: 978-18-3609-021-2
- Pages: 384
- Published: 2026-07-30
- Language: en_US