Horus Heresy (James Swallow) Books in Order

Nathaniel Garro escapes the betrayal at Isstvan aboard the Eisenstein, carrying news that Horus has turned traitor. It is one of the key early Horus Heresy novels and the start of Garro's loyalist legend.

This Horus Heresy anthology collects stories from the widening civil war, showing how betrayal spreads beyond the main battle lines. Swallow's contribution adds another angle on fear, faith, and Imperial fracture.

During the Horus Heresy, assassins are sent to end the war by killing Horus. The mission becomes a tense, morally murky hunt where loyalty and murder are almost the same tool.

Garro begins his work for Malcador as a Knight-Errant, sent to recruit and test warriors during the Heresy. It is a key early step in his post-Eisenstein path.

An anthology from the middle years of the Horus Heresy, when the war has spread and certainty is gone. Swallow's included work adds to the sense of a galaxy breaking in stages.

Garro undertakes a dangerous mission tied to loyalty, identity, and a warrior thought lost to the traitors. The story deepens the Knights-Errant thread in the Horus Heresy.

A Horus Heresy short story about panic, propaganda, and the damage a lie can do far from the front lines. It shows the civil war spreading through fear as much as armies.

Sanguinius and the Blood Angels are lured to Signus Prime, where Chaos hopes to break or claim them. The novel is central for readers following the Legion's Horus Heresy tragedy.

Blood Angels left reeling after disaster must face the cost of survival and the pull of duty. This short Heresy-era piece fits beside Fear to Tread and the Legion's wider tragedy.

Garro's Knights-Errant work continues as questions of truth, loyalty, and hidden corruption guide another mission. It is part of the chain that turns Garro into Malcador's trusted agent.

Two Horus Heresy audio dramas follow loyalists navigating duty under impossible conditions. Swallow's Garro-focused material pairs well with Grey Angel for readers tracking the Knights-Errant storyline.

This Horus Heresy anthology gathers stories from a galaxy where the old Imperial certainty is collapsing. Swallow's connected work helps show how faith, rumour, and betrayal reshape the war.

A short Heresy-era story about what is left after betrayal, war, and faith have done their damage. It works as a reflective side piece in Swallow's larger Horus Heresy material.

Garro faces deception and hidden threats while serving Malcador's secret war. The story adds another mission to the Knight-Errant arc, where trust is scarce and consequences are severe.

A Horus Heresy assassin story about a survivor, a target, and the long shadow of the failed mission in Nemesis. It is a tight follow-up for readers interested in Imperial assassins.

Nathaniel Garro's long road through the Horus Heresy continues as faith, duty, and the work of the Knights-Errant pull him toward another dangerous mission. A compact Garro story for readers following his loyalist arc.

Garro moves through the wreckage of old loyalties as the Heresy deepens. The story adds another piece to his transformation from Death Guard survivor to Knight-Errant instrument.

Garro's loyalty to the Emperor is tested again as duty demands secrecy, sacrifice, and action. This audio drama is part of the essential chain between Eisenstein and his later fate.

Garro is sent after a warrior whose loyalty could matter deeply to the loyalist cause. The mission blends confrontation, memory, and the Heresy's central wound: brother fighting brother.

Malcador gives Garro a new purpose after the disaster of Isstvan and the flight to Terra. This is the starting point for his Knights-Errant missions after The Flight of the Eisenstein.

Garro follows a mission where truth is both weapon and burden. It is another important step in the Knight-Errant arc, with loyalty tested in the shadows of the civil war.

Garro serves Malcador as a Knight-Errant, taking on secret missions while the Imperium reels from betrayal. This collection tracks his move from disgraced Death Guard captain to one of the Heresy's key loyalist agents.

This Horus Heresy anthology gathers stories that point toward the Siege of Terra. Swallow's material fits the gathering sense that every surviving loyalist is being pulled toward the final battle.

The Horus Heresy nears its end as Mortarion, the Death Guard, and Garro face turning points that will shape the Siege of Terra. It is a major late-series bridge into the finale.

The Knights-Errant take centre stage in this Horus Heresy collection, with Garro and others fighting Malcador's secret war. It is best read after The Flight of the Eisenstein.

As Terra burns, Nathaniel Garro approaches the end of the path that began with betrayal at Isstvan. This novella brings his long Heresy journey toward a bloody, personal reckoning.