Accessing the archive…
Istvaan is a 2-book reading order in Warhammer 40,000, spanning Horus Heresy. Below is every entry in suggested reading sequence — series order first, then in-universe chronology — so you can follow the story from start to finish and see where each book sits in the wider 40k timeline.
Free reading-order poster
An original, shareable Istvaan reading-order poster — no Games Workshop art, just the books in order. Pin it, download it, or share the list.
Original summaries and chronology labels generated from the same catalog powering the atlas.
Ben Counter
A direct continuation of the opening trilogy, moving from conspiracy into open betrayal.
005.M31 - 006.M31
range date, medium confidence
First published 2006
Graham McNeill
A faction-focused descent story showing how pride, art, and corruption reshape a legion.
005.M31 - 006.M31
range date, medium confidence
First published 2007
This reading order matches publication order — release sequence and suggested reading sequence are the same here. Browse every book by release year on the publication-order page.