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BooksdystopianGideon the Ninth
Cover of Gideon the Ninth by Tamsyn Muir
№ 1 · The Locked Tomb

Gideon the Ninth,

by Tamsyn Muir

Ask AI
Rating4.1/ 5
Ratings1,081
Pages448
Reading Hours9h
Published2019
LanguageEnglish

§Synopsis

01

The Emperor needs necromancers.

The Ninth Necromancer needs a swordswoman.

Gideon has a sword, some dirty magazines, and no more time for undead nonsense.

Tamsyn Muir’s Gideon the Ninth unveils a solar system of swordplay, cut-throat politics, and lesbian necromancers. Her characters leap off the page, as skillfully animated as arcane revenants. The result is a heart-pounding epic science fantasy.

Brought up by unfriendly, ossifying nuns, ancient retainers, and countless skeletons, Gideon is ready to abandon a life of servitude and an afterlife as a reanimated corpse. She packs up her sword, her shoes, and her dirty magazines, and prepares to launch her daring escape. But her childhood nemesis won’t set her free without a service.

Harrowhark Nonagesimus, Reverend Daughter of the Ninth House and bone witch extraordinaire, has been summoned into action. The Emperor has invited the heirs to each of his loyal Houses to a deadly trial of wits and skill. If Harrowhark succeeds she will be become an immortal, all-powerful servant of the Resurrection, but no necromancer can ascend without their cavalier. Without Gideon’s sword, Harrow will fail, and the Ninth House will die.

Of course, some things are better left dead.

§Our take

This is a book about two people who can't stand each other, dressed up as gothic space opera. Gideon and Harrowhark start as bitter enemies and get shoved into partnership, and that reluctant loyalty is what carries the thing. Kirkus liked it too. The worldbuilding is narrower than it first looks, and the book works better once you accept that the relationship is the point.

The tone is the gamble. Grim bone magic, narrated by a sarcastic, meme-literate swordswoman. Some readers find that a delight, others find the jokes juvenile and the gothic mood undercut. The first half is dense, with a big cast, titles and rules to absorb. Then the plot tightens into a locked-room mystery with a body count, and it moves. Plenty of readers nearly quit and ended up loving it.

§Themes

Enemies, bound
Gideon and Harrowhark loathe each other and need each other, and the book runs on that tension.
Gothic meets glib
A deadly, bone-strewn setting narrated by a voice that would rather crack a joke.
Locked-room dread
Once the guests start dying in a closed setting, the book turns into an elimination mystery.
Service and escape
Gideon wants out of a life of servitude and gets pulled into a bigger one.

§How it was received

Critics mostly welcomed this strange, swaggering debut. Kirkus praised the genre mix and the odd loyalty between the leads, while Locus reviewers felt the central relationship was under-explored. It was a 2020 Hugo Best Novel finalist, losing to A Memory Called Empire.

§Read it if

  • You like a voice-driven book that is funny and violent at once
  • You want enemies-to-reluctant-partners at the center, with queer women front and center
  • You enjoy Agatha Christie-style mysteries and will put up with a slow setup

§Skip it if

  • You need clear rules and a small cast from page one. The first half is confusing.
  • Modern slang in a grim, gothic setting sounds grating rather than fun

§Before you start

Reading experience
Settle in: the crowded first half, where the glossary earns its keep, eventually gives way to a faster mystery that rewards the effort.
Reading order
Book 1 of The Locked Tomb, followed by Harrow the Ninth (2020) and Nona the Ninth (2022). A fourth book, Alecto the Ninth, has been announced. Read in publication order, since the sequel reframes this book and is far more tangled.
Content notes
Pervasive blood, gore and death; Reanimated corpses and skeletons; necromancy is central; Violent duels and a murder-mystery plot in which characters are killed one by one.

§Common questions

Is Gideon the Ninth part of a series?
Yes. It opens The Locked Tomb, and the next books are Harrow the Ninth and Nona the Ninth. Start here.
Why is the beginning so confusing?
It throws a large cast, titles and magic rules at you early. A character glossary helps. Readers say the second half is faster and more rewarding.
Is it fantasy or science fiction?
Both. It mixes necromancy and swordplay with space travel and a murder mystery. Some readers think the sci-fi parts blend in, others find them poorly integrated.

§If you liked this

  • And Then There Were None by Agatha Christie — One reviewer sees the closing mystery echoing Christie's closed setting where everyone gets picked off.
  • Radiance by Catherynne M. Valente — A reviewer compared its odd, genre-bending science-fantasy feel.
  • Space Opera by Catherynne M. Valente — The same reviewer cites it for playful, voice-driven genre mixing.
  • A Memory Called Empire by Arkady Martine — The book that beat it for the 2020 Hugo. Same award year, but not a stylistic match.
Sources
  • Wikipedia
  • Wikipedia
  • Wikipedia
  • The Hugo Awards (official site)
  • Kirkus Reviews
  • Bookreporter

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§Genres
dystopian1lgbtq1mystery1science fantasy1science fiction1space1young adult1
§Content Warnings
§Moods
challenging1emotional1funny1lighthearted1mysterious1
§Tags
#body horror1#bullying1#cancer1#plot driven1

§About the Author

Tamsyn Muir
Tamsyn Muir

6 books in catalog

Combining necromancy, gothic horror, swordplay, and space opera, the dark science fantasy series The Locked Tomb brought an inventive blend of genre tropes to modern fiction, beginning with the debut novel Gideon the Ninth. Author Tamsyn Muir established a distinct narrative voice filled with sharp humor, complex puzzle-box structures, and intense character relationships.

Career & Background

Born on March 14, 1985, in New South Wales, Australia, Tamsyn Elizabeth Muir relocated to New Zealand as an infant and grew up in the town of Howick, outside Auckland. She spent the majority of her life in New Zealand, living in Howick, Waiuku, and central Wellington. After attending university and completing an education degree in 2010, Muir worked as a teacher of English and English as a second language. She attended the Clarion Writers Workshop in 2010, and her debut short story, "The House That Made the Sixteen Loops of Time," appeared in Fantasy Magazine in 2011. Her short fiction appeared in premier publications including Nightmare Magazine, F&SF, Fantasy Magazine, Weird Tales, and Clarkesworld, earning nominations for the Nebula Award, the Shirley Jackson Award, the World Fantasy Award, and the Eugie Foster Memorial Award.

Muir transitioned into long-form fiction with her debut novel Gideon the Ninth in September 2019, published by Tor.com. The novel won the Locus Award for Best First Novel and the Crawford Award, alongside nominations for the Hugo, Nebula, and World Fantasy awards. Following the success of her debut, Muir relocated to Oxford in the United Kingdom, where she continues to live and teach while expanding her fiction.

Writing Style & Themes

Muir's writing features an unconventional synthesis of high-concept science fiction and gothic fantasy, balancing reverence for classical gothic motifs with modern irreverent humor. Her narratives frequently center on bone magic, necromancy, loyalty, grief, and intricate personal relationships operating within vast interstellar empires. Through tight narrative perspectives and deceptive narrators, Muir constructs complex puzzle-box plots that challenge readers while maintaining vivid action and emotional depth.

Major Works

  • Gideon the Ninth — The 2019 debut novel in The Locked Tomb series introduces Gideon Nav and the necromancer Harrowhark Nonagesimus as they travel to a mysterious facility to undergo lethal trials. The book won the Locus Award for Best First Novel and received Hugo and Nebula award nominations.
  • Harrow the Ninth — The 2020 second book in the series shifts to a second-person perspective, following Harrowhark Nonagesimus as she navigates an emperor's war against cosmic threats while grappling with memory loss and delusion.
  • Nona the Ninth — The 2022 third volume centers on a young woman with no memory of her origins living in a besieged city, expanding the scale and emotional range of the series.
  • Alecto the Ninth — The forthcoming concluding novel of The Locked Tomb series, anticipated to resolve the central mysteries of the empire and its necromantic origins.
  • The Mysterious Study of Doctor Sex — A short story set in The Locked Tomb universe focusing on the youth of Ninth House characters and expanding the lore of the series.
  • As Yet Unsent — A side-story novella told through a series of intercepted intelligence reports, detailing military operations and character insights within The Locked Tomb timeline.

§Featured Series

The Locked Tomb

Cover of The Mysterious Study of Doctor Sex by Tamsyn Muir

The Mysterious Study of Doctor Sex

Tamsyn Muir, 2020
Cover of Gideon the Ninth by Tamsyn Muir

Gideon the Ninth

Tamsyn Muir, 2019
Cover of Harrow the Ninth by Tamsyn Muir

Harrow the Ninth

Tamsyn Muir, 2020
Cover of As Yet Unsent by Tamsyn Muir

As Yet Unsent

Tamsyn Muir, 2021
Cover of Nona the Ninth by Tamsyn Muir

Nona the Ninth

Tamsyn Muir, 2022

Alecto the Ninth

TAMSYN MUIR

Alecto the Ninth

Tamsyn Muir, 2023

§Other Editions

Showing 2 of 21 editions
Cover of Gideon the Ninth

Gideon the Ninth

engAudiobook
Recorded Books Audio20199781980004905
Amazon
Cover of Gideon the Ninth

Gideon the Ninth

engPaperback
Tor Books20209781250313188
§Genres
dystopian1lgbtq1mystery1science fantasy1science fiction1space1young adult1
§Content Warnings
§Moods
challenging1emotional1funny1lighthearted1mysterious1
§Tags
#body horror1#bullying1#cancer1#plot driven1

Metadata

ISBN-139781250313171
ISBN-101250313171
ASINB07J6HWLPR

Editions and availability

Find Gideon the Ninth Tamsyn Muir in PDF, EPUB, ebook, audiobook, print, or library editions.

View on Amazon
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