Garro: Sword of Truth is the eighth audio drama for the Horus Heresy Series that was not originally released as part of an anthology or other release. Garro: Sword of Truth was released as an MP3 format download in November 2012 and was written by James Swallow. It was later re-released as an audio CD in December 2012, but can still be bought as a stand-alone audio drama MP3. The story was also published as part of the Garro main series anthology novel.

Official Synopsis

Nathaniel Garro, Knight Errant and agent of the Sigillite, returns from the battlefields of Calth to find a new mission already waiting for him -- a ragged fleet of Space Marines from several Legions lingers at the edge of the Sol System. With the presence of World Eaters and Emperor's Children causing concern among the Loyalist defenders and drawing a grim parallel with his own frantic flight, Garro must look beneath the obvious if he is to determine friend from foe...

Knights-Errant Series

The following is the chronological order of the first Knights-Errant member Nathaniel Garro's story arc set within the Horus Heresy:

Nathaniel Garro and his Knights-Errant also make an appearance in the novel Vengeful Spirit. All of these stories, with the exception of Flight of the Eisenstein were later included within the main series anthology novel Garro.


  • Garro: Sword of Truth (Audio Drama) by James Swallow
  • Garro (Anthology) by James Swallow
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