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Gideon The Ninth by Tamsyn Muir

In a crumbling space empire of necromancers, a sword-slinging cavalier is thrust into deadly riddles, locked rooms, and bone-bright magic. Wickedly witty and deliciously gothic, Gideon The Ninth marries mystery and mayhem in a voice you won’t forget.

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In Gideon The Ninth, did you enjoy ...

... acerbic, gallows humor threaded through grotesque, godlike magic and piles of corpses?

The Library at Mount Char by Scott Hawkins

If Gideon’s relentless quips in the face of bone monstrosities and the Canaan House murders made you grin, you’ll love the pitch-black wit in The Library at Mount Char. Like Gideon cracking jokes while dueling revenant constructs and picking through ossified clues, Carolyn and her fellow “librarians” cope with cosmic-scale horror via razor-edged banter—right up to godsplitting violence and taboo resurrections.

... an isolated, locked-room whodunit full of clues, banter, and mounting bodies?

The Spare Man by Mary Robinette Kowal

Miss the murder-lab puzzles and sealed-corridor paranoia of Canaan House? The Spare Man traps you on a luxury starliner as a fresh body drops and suspects stack up. Like Gideon and Harrow testing doors, decoding wards, and sifting alibis after each grisly discovery, the leads here spar with wit while picking through tight timelines, hidden compartments, and very personal motives.

... a rivals-to-intense-bond arc that blooms from hostility into ferocious loyalty?

This Is How You Lose The Time War by Amal El Mohtar, Max Gladstone

If the way Gideon and Harrow grind from hatred to ride-or-die partnership during the Lyctor trials hooked you, This Is How You Lose the Time War channels that same slow ignition. Red and Blue begin as sworn enemies leaving taunting messages, then—like Gideon and Harrow backing each other in bone-and-blood duels—their notes turn intimate, tactical, and finally devastatingly loyal.

... a ferociously capable, thorny female lead shouldering apocalyptic stakes and buried secrets?

The Fifth Season by N. K. Jemisin

If you loved watching Harrowhark’s ruthless brilliance (and terrifying bonecraft) carry a whole House through lethal trials, The Fifth Season gives you Essun—unyielding, brilliant, and dangerous—carving a path through a world-ending crisis. As with Harrow masking vulnerability behind cutting competence, Essun navigates fractured loyalties, brutal choices, and power that can shatter continents.

... occult, corpse-adjacent magic where forbidden rituals have terrible costs?

Ninth House by Leigh Bardugo

Drawn to the necromantic rites, bone wards, and taboo resurrections behind Gideon and Harrow’s trials? Ninth House digs into secret societies whose rituals—like the Canaan House experiments that leave corpses in their wake—exact grisly prices. As Gideon navigates charnel clues and dangerous ceremonies, Alex Stern peels back layers of body-bound magic, cover-ups, and consequences.

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