The Black Library (Games Workshop’s publishing division) has produced hundreds of Warhammer 40k novels spanning decades. Knowing where to start can be overwhelming. This guide organises every major reading path with flowchart-style recommendations, so you can find the perfect entry point based on your interests. If you are looking for our top recommendations, see our Best Warhammer Books page.
How to Use This Guide
Do I need to read in order?
Most Warhammer 40k novels are designed to be accessible on their own — you do not need to read them all in sequence. However, some series (like the Horus Heresy or Eisenhorn) have strong continuity and are best enjoyed in order. This guide marks which books are essential versus optional within each path, so you can skip ahead if a particular storyline does not grab you.
Where should I start?
Your starting point depends on what interests you. If you want epic galactic history, start with the Horus Heresy path. If you want detective fiction in space, start with Eisenhorn. If you want military sci-fi, start with Gaunt’s Ghosts. If you want a single novel to test the waters, read “Horus Rising” or “Eisenhorn: Xenos” — both are excellent standalone entry points.
Path 1: The Horus Heresy (54+ Books)
What is the Horus Heresy series?
The Horus Heresy is a 54-book series (plus novellas and anthologies) set 10,000 years before the current 40k timeline. It chronicles the Emperor’s Great Crusade, Horus’s betrayal, and the civil war that nearly destroyed the Imperium. It is the foundational story of the entire Warhammer 40k universe. For our detailed book-by-book guide, see Horus Heresy Book Series Order.
Essential Horus Heresy reading order (core path)
If you want to read the essential story without all 54 books, follow this core path: Horus Rising → False Gods → Galaxy in Flames (the opening trilogy) → Flight of the Eisenstein (Death Guard perspective) → Fulgrim (Emperor’s Children fall) → A Thousand Sons / Prospero Burns (read as a pair) → The First Heretic → Know No Fear → Betrayer → The Siege of Terra sub-series (8 books, starting with “The Solar War”).
Opening trilogy: Horus Rising, False Gods, Galaxy in Flames
The opening trilogy by Dan Abnett, Graham McNeill, and Ben Counter is the perfect entry point. Horus Rising introduces Horus as a noble, charismatic leader. False Gods shows his corruption. Galaxy in Flames brings the betrayal into the open with the massacre at Isstvan III. These three books are universally recommended as the starting point for any Horus Heresy reader.
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Which Horus Heresy books can I skip?
Of the 54 books, roughly 20 are considered essential to the main storyline, 15 are strong standalone novels worth reading, and 15–20 are optional or weaker entries. Books that can be safely skipped include “Battle for the Abyss,” “Damnation of Pythos,” and “Nemesis.” Fan-curated lists on r/40kLore identify the essential core path — typically around 20–25 books for the complete main storyline.
The Siege of Terra sub-series
The Siege of Terra is the climactic 8-book conclusion to the Horus Heresy, covering the final battle for the Imperial Palace. Starting with The Solar War by John French and culminating in The End and the Death (Parts I, II, III) by Dan Abnett, it delivers the payoff that 54 books of setup have been building toward. The Siege is widely considered the strongest sustained sequence in the entire series.
Path 2: Eisenhorn / Ravenor / Bequin (The Inquisition Saga)
What is the Eisenhorn series?
The Eisenhorn trilogy by Dan Abnett follows Inquisitor Gregor Eisenhorn — an Imperial Inquisitor who hunts heretics, daemons, and conspiracies across the Imperium. It is often considered the best starting point for anyone new to 40k fiction because it follows a relatable human character rather than superhuman Space Marines. For our character deep-dive, see Who is Eisenhorn?
Eisenhorn trilogy reading order
Xenos → Malleus → Hereticus. Each book follows Eisenhorn through a decades-long career that sees him gradually compromise his principles in pursuit of justice. Xenos is a gripping detective thriller that happens to be set in the 40k universe. It requires zero prior knowledge of Warhammer and is widely regarded as one of the best novels in the entire Black Library catalogue.
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Ravenor trilogy reading order
Ravenor → Ravenor Returned → Ravenor Rogue. The Ravenor trilogy follows Gideon Ravenor, Eisenhorn’s former pupil, now an Inquisitor in his own right. Confined to a psychic force-chair after a devastating injury, Ravenor leads his warband against conspiracies that threaten entire sectors. Read the Eisenhorn trilogy first for maximum impact, though Ravenor works independently.
Bequin series (ongoing)
Pariah → Penitent → Pandaemonium (forthcoming). The Bequin series follows Alizebeth Bequin, a character from the Eisenhorn trilogy, and is set after both Eisenhorn and Ravenor. It brings the three series together into a grand conclusion. Read Eisenhorn and Ravenor first — Bequin is the payoff for both trilogies and assumes familiarity with prior events.
Complete Inquisition saga reading order
For the full experience: Eisenhorn (Xenos → Malleus → Hereticus) → “The Magos” (bridging anthology) → Ravenor (Ravenor → Ravenor Returned → Ravenor Rogue) → Bequin (Pariah → Penitent → Pandaemonium). This gives you approximately 10 books of the highest quality 40k fiction, all by Dan Abnett, following a single interconnected narrative across centuries of in-universe time.
Path 3: Gaunt’s Ghosts (Military Sci-Fi)
What is Gaunt’s Ghosts?
Gaunt’s Ghosts is a long-running military sci-fi series by Dan Abnett following Colonel-Commissar Ibram Gaunt and his regiment of light infantry — the Tanith First and Only. It is the best military fiction in the 40k universe, comparable to Sharpe or Band of Brothers but set in the grim darkness of the far future. If you enjoy military fiction, start here.
Gaunt’s Ghosts reading order
The series is divided into arcs. The Founding: First and Only → Ghostmaker → Necropolis. The Saint: Honour Guard → The Guns of Tanith → Straight Silver → Sabbat Martyr. The Lost: Traitor General → His Last Command → The Armour of Contempt → Only in Death. The Victory: Blood Pact → Salvation’s Reach → The Warmaster → Anarch. Read in order — character deaths and plot developments carry across all 15 books.
Where to start with Gaunt’s Ghosts
First and Only is the first book but is rougher than later entries (it was Abnett’s first novel). If it does not grab you, try Necropolis (book 3), which is widely considered the point where the series becomes exceptional — a siege story that rivals the best military fiction in any genre. Most readers who reach Necropolis are hooked for the entire series.
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Path 4: Ciaphas Cain (Comedy/Adventure)
What is the Ciaphas Cain series?
The Ciaphas Cain series by Sandy Mitchell follows Commissar Ciaphas Cain — a self-proclaimed coward who accidentally keeps becoming a hero. The books are written in a deliberately humorous tone, parodying 40k’s grimdark setting while still telling exciting stories. They are the lightest, most fun 40k novels and an excellent entry point for readers who find the setting intimidating. For more, see Who is Ciaphas Cain?
Ciaphas Cain reading order
For the Emperor! → Caves of Ice → The Traitor’s Hand → Death or Glory → Duty Calls → Cain’s Last Stand → The Emperor’s Finest → The Last Ditch → The Greater Good → Choose Your Enemies → Vainglorious. The books are mostly standalone and can be read in any order, but the publication order works well and provides a gentle difficulty curve.
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Path 5: Space Marine Battles and Chapter-Specific Series
Ultramarines series by Graham McNeill
Nightbringer → Warriors of Ultramar → Dead Sky, Black Sun → The Killing Ground → Courage and Honour → The Chapter’s Due. This series follows Captain Uriel Ventris and provides the most comprehensive view of Space Marine culture, honour, and warfare. It is the definitive Space Marine novel series and essential reading for any Ultramarines fan.
Blood Angels series
Dante by Guy Haley is the standout Blood Angels novel and one of the best Space Marine books ever written. It follows Commander Dante — the oldest living Space Marine — from his mortal childhood through his ascension. Devastation of Baal (the sequel) covers the Tyranid invasion of the Blood Angels’ homeworld. Both are excellent and work as standalone reads.
Space Wolves by William King
The Space Wolf series (Space Wolf → Ragnar’s Claw → Grey Hunter → Wolfblade) follows Ragnar Blackmane from his selection as a Space Wolf recruit through his rise to a legendary warrior. These are action-packed novels that showcase the unique Viking-inspired culture of the Space Wolves chapter. They are among the most popular Space Marine novels for good reason.
Dark Angels
The Dark Angels’ story is defined by their secret — the existence of the Fallen (traitor Dark Angels from the Heresy). Angels of Darkness by Gav Thorpe is the essential standalone novel. The “Legacy of Caliban” trilogy (Ravenwing → Master of Sanctity → The Unforgiven) provides a more comprehensive look at the chapter’s internal struggle between loyalty and obsession.
Night Lords trilogy by Aaron Dembski-Bowden
Soul Hunter → Blood Reaver → Void Stalker. This trilogy follows the Night Lords — Chaos Space Marines who embrace terror as a weapon — and is widely considered the best Chaos Marine fiction ever written. The protagonist, Talos, is a fascinating anti-hero, and the trilogy provides deep insight into what it means to be a Traitor Marine 10,000 years after the Heresy.
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Word Bearers trilogy by Anthony Reynolds
Dark Apostle → Dark Disciple → Dark Creed. This trilogy explores the Word Bearers — the Chaos Legion that worships the Dark Gods most fervently. It delves into Chaos worship, daemonic pacts, and the religious fanaticism that drives the Word Bearers. A solid choice for readers interested in the Chaos perspective.
Following one faction? We have dedicated reading orders for Ultramarines, Space Wolves, Dark Angels, Blood Angels, Chaos Space Marines, Necrons, Orks and Aeldari.
Path 6: Standalone 40k Novels (If You Want Just One Book)
If you want action: Helsreach by Aaron Dembski-Bowden
Helsreach follows Chaplain Grimaldus and a small force of Black Templars defending a hive city against an Ork WAAAGH! It is pure, concentrated 40k action — desperate last stands, impossible odds, and heroic sacrifice. If you want a single book that captures the essence of Warhammer 40k combat, this is it. It also inspired an excellent fan-made animated film.
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If you want horror: The Infinite and the Divine by Robert Rath
This novel follows two Necron Lords — Trazyn the Infinite and Orikan the Diviner — locked in an absurd rivalry spanning 10,000 years. It is simultaneously hilarious, horrifying, and deeply philosophical, offering a completely unique perspective on the 40k universe through inhuman eyes. It is the best-reviewed 40k novel of the 2020s and a superb standalone read.
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If you want mystery: The Vaults of Terra by Chris Wraight
The Carrion Throne → The Hollow Mountain → The Dark City. This series follows an Inquisitor investigating conspiracies on Terra itself — the heart of the Imperium. It provides an incredibly detailed look at daily life on Holy Terra, from the golden spires of the Imperial Palace to the underhive depths. A compelling political thriller in a 40k setting.
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If you want xenos perspective: Brutal Kunnin by Mike Brooks
Brutal Kunnin is written partly from the perspective of Ork characters, capturing their unique way of thinking and speaking in hilarious fashion. An Ork invasion of a Mechanicus forge world goes spectacularly wrong (or right, depending on your perspective) in this fast, fun novel. It is the best Ork-perspective fiction in the Black Library and a joy from start to finish.
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Path 7: Age of Sigmar Novels
Where to start with AoS fiction
AoS fiction is smaller than 40k’s library but growing steadily. Soul Wars by Josh Reynolds is the best starting point — it introduces the Mortal Realms, the Stormcast Eternals, and the Nighthaunt in an accessible narrative. Gloomspite by Andy Clark and The Court of the Blind King by David Guymer are excellent standalone AoS novels.
Gotrek Gurnisson in AoS
The legendary Gotrek Gurnisson — the Slayer from Warhammer Fantasy — survived the End Times and now walks the Mortal Realms. Realmslayer (originally an audiobook) followed by Ghoulslayer, Gitslayer and Blightslayer by Darius Hinks follow Gotrek as he seeks his doom in this strange new world. Essential reading for fans of the Old World who want a bridge to AoS.
Reading Path Flowchart
If you want epic history and mythology…
Start with the Horus Heresy path. Read the opening trilogy (Horus Rising, False Gods, Galaxy in Flames), then follow the essential reading list through to the Siege of Terra. This path requires the biggest time commitment (20+ books for the core) but delivers the most comprehensive understanding of the 40k universe’s foundations.
If you want character-driven detective fiction…
Start with Eisenhorn: Xenos. Follow the complete Inquisition saga through Ravenor and into Bequin. This path is arguably the highest-quality sustained fiction in the Black Library and requires no prior 40k knowledge. Dan Abnett’s writing is accessible to anyone who enjoys detective/thriller fiction, regardless of their familiarity with Warhammer.
If you want military fiction (Band of Brothers in space)…
Start with Gaunt’s Ghosts. If “First and Only” does not hook you immediately, jump to “Necropolis” (book 3). The Ghosts series delivers the best human-level perspective on the 40k universe — these are ordinary soldiers (well, extraordinarily skilled soldiers) fighting in an extraordinary setting.
If you want something fun and light…
Start with Ciaphas Cain: For the Emperor! The Cain books are genuinely funny without undermining the setting. They are perfect palate cleansers between heavier 40k fiction and work beautifully as entry points for readers who are curious about 40k but intimidated by the grimdark reputation.
If you only have time for one book…
Read Horus Rising if you want to understand the setting’s origin, Eisenhorn: Xenos if you want the best pure novel, or The Infinite and the Divine if you want something unique and modern. Any of these three books will tell you whether 40k fiction is for you.
Frequently Asked Questions
What order are the Warhammer 40k books in chronologically?
Start with the Horus Heresy and its Siege of Terra finale, which are set in the 31st millennium, about 10,000 years before the main setting. Most other series, including Eisenhorn, Ravenor, Gaunt’s Ghosts and Ciaphas Cain, take place in the 41st millennium. Newer books set after the Great Rift, such as Guy Haley’s Dark Imperium, move into the 42nd millennium. You don’t need to read everything in timeline order, though. Most series stand on their own.
How many Warhammer 40k books are there?
There are several hundred Warhammer 40k novels, plus hundreds of novellas, short stories, audio dramas and anthologies, and Black Library adds more every year. The Horus Heresy alone runs to 54 books before the Siege of Terra finale. Nobody reads them all, so pick a path from this guide, whether that’s the Heresy, the Inquisition saga, Gaunt’s Ghosts or a single standalone novel.
What is a good spoiler-free starting point for 40k books?
Begin with a first book that assumes no prior knowledge: Eisenhorn: Xenos, Horus Rising, First and Only, For the Emperor! or the standalone Helsreach. Don’t start with a series finale. The Siege of Terra spoils the Horus Heresy, and Bequin assumes you’ve read both Eisenhorn and Ravenor. If you read each path in the order listed here, the big reveals land where the authors intended.
Is there an official Black Library reading order?
Not for the whole range. Black Library numbers its long series, such as the Horus Heresy and Gaunt’s Ghosts, and sells omnibus editions that group trilogies in order. There is no single official sequence for every 40k book, because most novels are written to stand alone. Fan-made lists, including the paths in this guide, fill that gap by grouping books by series, faction and tone.