Booklist: In a universe ruled by an undying emperor, nine houses struggle for power through their necromantic rulers. The crumbling Ninth House, that of the Keepers of the Locked Tomb, is home to Gideon: swordswoman, malcontent, loveless lesbian. Gideon has spent most of her life attempting to escape the drudgery of the Ninth and its creepy nuns, oppressive darkness, and vicious heir, Harrowhark. But Harrow has been invited to enter a competition among the houses for the honor of being selected Lyctor, and Gideon finally has an opportunity to escape the Ninth—as long as she agrees to serve as Harrow’s cavalier and bodyguard. When members of other houses start dying mysteriously after the competitors have been stranded together in the haunted and moldering First House, it’s up to Gideon and Harrow—uneasy allies at best—to figure out who to trust and how to survive the deadly game. Muir’s debut fuses science fiction, mystery, horror, fantasy, action, adventure, political intrigue, deadly dark humor, and a dash of romance with a healthy serving of skeletons and secrets and the spirit of queer joy. This extraordinary opening salvo will leave readers dying to know what happens next.