The Siege of Terra Books in Order
Part ofJames Swallow Books in OrderSee Siege of Terra stories by James Swallow in order, with summaries, background, and guidance for Horus Heresy readers.
Last updated: June 7, 2026
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Publication Order
1 book
Flames of Betrayal
by James Swallow
2026
A Siege of Terra-linked collection of stories about treachery, sacrifice, and last stands. Swallow's connected material matters most for readers following Garro and the loyalist threads around Terra.
Series background & context
The Siege of Terra is the endgame of the Horus Heresy. After years of betrayal and war, the traitor forces reach the Imperial Palace, and every old choice comes due.
James Swallow's Siege-era material ties back to Nathaniel Garro and the Knights-Errant. That matters because Garro's path began with the first warning of Horus's betrayal, and the Siege brings that long road close to its end.
Do not start the Heresy here. The Siege works because it carries so much history into each battle. Read The Flight of the Eisenstein and the main Garro material first if you want Swallow's thread to land properly.
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