It is worth reading for dedicated Warhammer 40,000 fans and completionists building a collection of the prequel saga. The book expands on the central conflict between the Emperor's forces and their adversaries. However, it may feel procedural for readers not deeply invested in this era of the setting.

Dan Abnett

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Reviewed

November 12, 2026

Read Time

6 min read

Our age bandAdult

Reader rating

4.4 · 721 Amazon ratings, as of Nov 2026

reader ratings, not a LuvemBooks score

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Book 31 · The Horus Heresy

Legacies of Betrayal

Name: Legacies of Betrayal
Author: Dan Abnett
ISBN: 1849708363

Legacies of Betrayal by Dan Abnett Review: Book Thirty-One of the Horus Heresy

by Dan Abnett

Legacies of Betrayal is the thirty-first entry in the Horus Heresy series by Dan Abnett, published by Games Workshop. It continues the epic saga of the galaxy's descent into civil war, designed for readers already invested in the expansive lore of the Warhammer 40,000 universe.

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Our age band: Adultmilitary violence · ideological betrayal

LuvemBooks Verdict

Best for

The necessary progression of the galactic conflict makes it essential for dedicated Warhammer 40,000 readers following the Horus Heresy series who want to understand the gaps between the foundational trilogies.

Worth it if

Worth reading if you are building a completionist collection of the prequel saga and want to see how the ideological fractures expand across the Space Marine Legions.

Skip if

Skip it if you are looking for a standalone entry point into the franchise or prefer immediate character payoff over dense continuity and military strategy.

What readers & critics say

Civilian Reader strongly recommends the anthology collection for fans, noting it fills gaps with well-written stories, while Thegrimoire.co positions the broader Horus Heresy project as a massive prequel where foundational character arcs provide the essential emotional structure.

Sources: Civilian Reader, Thegrimoire.co

4.4from 721 Amazon ratings, as of Nov 2026— reader ratings, not a LuvemBooks score

The Horus Heresy reading order

Book 31 of 64 books

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Legacies of Betrayal serves as the thirty-first entry in the Horus Heresy saga, expanding the galaxy-spanning civil war. The book functions as a structural link in a sprawling narrative chain rather than a standalone triumph for dedicated readers committed to the Warhammer 40,000 lore. It is best suited for completionists who prioritize world-building over other concerns.

Is it worth reading?: It is worth reading for dedicated Warhammer 40,000 fans and completionists building a collection of the prequel saga. The book expands on the central conflict between the Emperor's forces and their adversaries. However, it may feel procedural for readers not deeply invested in this era of the setting.
Similar books: Readers who enjoy dense military science fiction and expansive lore will appreciate titles like Horus Rising by Dan Abnett, The First Heretic by Aaron Dembski-Bowden, and Morning Star by Pierce Brown, which share a focus on ideological conflict. For those seeking a more character-driven approach to space opera, The Long Way to a Small, Angry Planet by Becky Chambers and All Systems Red by Martha Wells offer compelling narratives. Hyperion by Dan Simmons is also recommended for its thematic depth.
Who should read this?: This book is written for dedicated fans of the Warhammer 40,000 lore who are following the chronological progression of the Horus Heresy series. It is specifically suited for readers seeking expansive world-building. Those seeking a story that stands alone will likely find the continuity frustrating.
About Dan Abnett: Daniel P. Abnett is an English comic book writer and novelist. His writing career has centered on developing complex narratives within expansive fictional universes, particularly within the science fiction genre.
Where does this book sit in the series?: This volume is part of the Horus Heresy series. The saga is structured to allow readers to follow specific arcs rather than demanding a strict linear read-through. It sits alongside other essential entries like The First Heretic and Betrayer as part of the narrative spine.
What is the reading experience like?: The book functions as part of the larger series. Readers should approach it with the understanding that it does not provide extensive guidance for newcomers. It points toward those seeking expansive world-building.

Summarize this book

Is it worth reading?

Who should read this?

About Dan Abnett

Where does this book sit in the series?

What is the reading experience like?

Summarize this book

Legacies of Betrayal by Dan Abnett is an installment in the Horus Heresy series, continuing the galaxy-spanning civil war within the Warhammer 40,000 universe. The narrative focuses on the deepening fall of the Space Marine Legions. It emphasizes depth and scope within the larger series rather than standing alone.

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Where does this book sit in the series?

Is the lore accessible to newcomers?

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Our Review

We review the evidence: published reviews and reader verdicts, gathered and weighed with AI assistance and edited by LuvemBooks, rather than one reader's first-hand take.

Legacies of Betrayal delivers the necessary progression of the galactic conflict for readers committed to the Horus Heresy saga. Those new to the franchise should approach it with caution, as it relies heavily on established continuity and does not function as a standalone introduction.

Legacies of Betrayal (Horus Heresy) by Dan Abnett front cover

What It Is and Covers

Legacies of Betrayal functions as a novel within the larger Horus Heresy project, a massive prequel series to the Warhammer 40,000 universe. The narrative continues the overarching tragedy of the galaxy tearing itself apart, focusing on the ideological fractures and military campaigns that define the era.

The story expands on the central conflict between the Emperor's forces and those who have turned against him, maintaining the series' focus on the fall of the Space Marine Legions.

Who It Is For and Who Should Skip It

The book is intended for dedicated fans of the Warhammer 40,000 lore who are following the chronological progression of the Horus Heresy series. Readers seeking a self-contained story or a casual entry point into the franchise will likely find the dense continuity and lack of background context frustrating.

Those who have not engaged with the earlier volumes may struggle to follow the complex political maneuvers and character histories driving the plot.

Where It Sits in the Series

This volume occupies the thirty-first position in the fifty-four-book Horus Heresy series. Thegrimoire.co notes that the Horus Heresy is a prequel to Warhammer 40K, emphasizing that a completionist approach is not required to understand the story's shape.

The series is structured to allow readers to follow specific arcs, such as the opening trilogy or essential standalone entries, rather than demanding a strict linear read-through.

Is It Worth Reading?

Weighing the structural demands of the series, the book serves as a functional link in a sprawling narrative chain rather than a standalone triumph. It points toward readers who value intricate world-building and military strategy over immediate character payoff.

For those seeking the emotional core of the series, thegrimoire.co highlights that Loken's arc across the opening trilogy provides the essential emotional structure. The book sits alongside other essential entries like The First Heretic and Betrayer, which thegrimoire.co identifies as standing with Abnett's works as the spine of the series.

It offers a necessary continuation for completionists but may feel like a procedural step for those not deeply invested in the specific military campaigns of this era.

Sources & Further Reading

The key facts and claims in this review are grounded in the retrieved, verified sources listed below.

1
Dan Abnett — author profile
Dan Abnett, LuvemBooks
2
The Horus Heresy Reading Order: All Dan Abnett Books in Order | The Grimoire
thegrimoire.co
3
Civilian Reader
Civilian Reader

Age & Reading Level

Our age band

Adult

Our age band groups books for browsing; it isn't an age a review gave.

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3 content notes · who it suits

Content to know about

military violence

ideological betrayal

complex political maneuvering

Skip if you're looking for a standalone entry point into the franchise or prefer immediate character payoff over dense continuity and military strategy.

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Horus Rising

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Read the first book in the Horus Heresy series to see how the Warmaster's rise sets the stage for the stories in Legacies of Betrayal.

Legacies of Betrayal collects Horus Heresy stories shaped by the Emperor's sons turning against each other. Reading Horus Rising provides the essential backstory of the Warmaster's rise and the crusade that precedes the betrayal. This context makes the later stories feel like tragic inevitabilities rather than isolated tales.

If you liked Legacies of Betrayal

In our catalogue

The First Heretic

Aaron Dembski-Bowden

Experience the same dark Warhammer 40,000 lore through a different Space Marine Legion's perspective.

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The Long Way to a Small, Angry Planet

Becky Chambers

Enjoy character-driven space opera that prioritizes crew dynamics over galactic war stakes.

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Hyperion

Dan Simmons

Dive into a complex narrative structure set within a richly detailed and ancient science fiction universe.

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All Systems Red

Martha Wells

Engage with a protagonist navigating complex social and political structures in a futuristic setting.

In our catalogue

Morning Star

Pierce Brown

Follow a hero fighting for a cause in a high-stakes science fiction universe.

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Our Review

What It Is and Covers

Who It Is For and Who Should Skip It

Where It Sits in the Series

Is It Worth Reading?

Sources & Further Reading

Age & Reading Level

Reader reviews

Books like Legacies of Betrayal

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