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Release date: 18 July 2026
Format: paperback omnibus
Setting: The Horus Heresy
The novella Garro: Knight of Grey and the Era of Ruin anthology
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The dust of the Siege of Terra hasn't settled, and the wounds run deep. Flames of Betrayal is a Horus Heresy omnibus for readers who want the bruised, dangerous dawn after Horus's fall — treachery, grief and grim resolve, told by some of Black Library's sharpest pens.
At a glance
Format: paperback omnibus
Setting: The Horus Heresy
Includes the novella Garro: Knight of Grey and the Era of Ruin anthology
Written by Black Library heavyweights including Abnett, Dembski-Bowden and Swallow
English Language Version
In Garro: Knight of Grey, the former Death Guard legionary faces his monstrous father, the traitor primarch Mortarion; Era of Ruin charts the fractured galaxy in the aftermath. A tidy entry point if you missed the individual releases.
Grimdark storytelling at its best. A cracking read for any 40K or Horus Heresy fan — and fine company while you paint the legions it describes.
Handpicked recommendations — no bundle or discount, just great reads in the same world.
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