
Based on your book
by Muir, Tamsyn
Harrow the Ninth is a disorienting, claustrophobic descent into the fractured mind of a necromancer grappling with the trauma of her past. Following the events of the first book, Harrow finds herself in a decaying space station, surrounded by ancient, hostile powers and a reality that seems to be bending under the weight of her own grief. The narrative is intentionally unstable, forcing you to question what is real and what is a manifestation of Harrow's deteriorating sanity. It is a dense, intellectually demanding read that trades the snarky energy of its predecessor for a cold, gothic intensity. If you prefer your science fiction to be challenging, emotionally devastating, and deeply weird—and if you have the patience to piece together a puzzle that refuses to provide easy answers—you will find this book addictive.
Since Harrow the Ninth thrives on psychological instability, complex world-building, and high-stakes political intrigue, these recommendations focus on works that share that same intellectual rigor and dark atmosphere. We selected titles like Ninefox Gambit and A Memory Called Empire because they mirror the internal struggle of characters navigating fractured identities and impossible power dynamics. For readers who enjoyed the surreal dread and the feeling of being trapped in a hostile, logic-defying environment, authors like Jeff VanderMeer and Mervyn Peake offer the perfect companion pieces to the cold, ritualistic decay of the Locked Tomb.
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Like Harrow the Ninth, this book features a brilliant, morally compromised protagonist navigating a brutal political landscape where personal identity is sacrificed for power. It shares the same sense of crushing, high-stakes tragedy and intricate, cold-blooded world-building that fans of Muir's work will find deeply compelling.
This novel offers a similarly dense, immersive sci-fi setting filled with political maneuvering and a protagonist dealing with memory, identity, and the weight of a dead predecessor. Readers who enjoyed the 'locked-room' mystery and complex power dynamics of the Ninth House will appreciate the sophisticated prose and cultural depth here.
For readers drawn to the surreal, psychological horror, and unreliable narration of Harrow's journey, this book is a perfect match. It captures a similar sense of dread and claustrophobia as characters explore a mysterious, reality-bending environment where the rules of existence are fundamentally broken.
by N.K. Jemisin
Fans of Muir's unconventional narrative structures and devastating emotional payoffs will find a kindred spirit in Jemisin's masterpiece. It features a harsh, unforgiving world, a powerful magic system rooted in trauma, and a protagonist who is as difficult as she is unforgettable.

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by Yoon Ha Lee
This book matches the 'space fantasy' aesthetic and the concept of an internal, ghostly presence sharing a protagonist's mind, much like Harrow and Gideon. It is unapologetically weird, intellectually demanding, and features a brilliant, tactical plot that rewards attentive readers.
by Mervyn Peake
If you loved the gothic, decaying, and claustrophobic atmosphere of the First House, this classic is the progenitor of that specific vibe. It is a slow, lyrical, and intensely character-driven study of a sprawling, ancient castle and the strange people trapped within its ritualistic walls.
While lighter in tone than Harrow, this book features a highly technical, logic-based magic system that feels similar to the necromantic physics of the Locked Tomb series. It excels at world-building and features a sharp, witty protagonist who finds herself in over her head against ancient, god-like powers.
This book shares the dark, bizarre, and darkly humorous DNA of the Locked Tomb series, focusing on a group of 'siblings' raised in a horrific, god-like environment. It is violent, strange, and deeply emotional, perfect for readers who like their fantasy to push boundaries and defy expectations.
For those who loved the intense, volatile, and queer romantic dynamics of Gideon and Harrow, this book offers a high-octane, rage-filled alternative. It features a fierce female lead, a complex love triangle, and a society that treats its young people as disposable fuel for war.
by Marina and Sergey Dyachenko
This is a dark, philosophical academic fantasy that feels like a more sinister version of a magic school. It deals with the transformation of the self, the loss of humanity, and the crushing weight of destiny, themes that are central to Harrow the Ninth's narrative arc.

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