We are halfway through the Siege of Terra books with Saturnine. This was a good opportunity to update the Horus Heresy Reading Guidance with my thoughts on the Siege books so far. I also made a bunch of updates to other books along the way and I highlighted my “short list” of books I recommend reading before the Siege.

• Horus Rising
• False Gods
• Galaxy in Flames
• The Flight of the Eisenstein
• Legion
• A Thousand Sons
• Prospero Burns
• The First Heretic
• Know No Fear
• The Unremembered Empire
• The Master of Mankind
• Slaves to Darkness

That’s 12, if you want to stretch it to 15 I would add Betrayer, Vengeful Spirit and begrudgingly Fulrim