“Nona the Ninth” is the third installment in the critically acclaimed “Locked Tomb” series by Tamsyn Muir. Set in a futuristic world of necromancers and space exploration, the story follows the irreverent and resourceful Harrowhark Nonagesimus, a bone witch and unlikely hero. In this thrilling conclusion to the trilogy, Harrowhark embarks on a daring quest to uncover the secrets of her own past, confront ancient enemies, and save her loved ones from a looming cosmic threat. Filled with dark humor, intricate world-building, and mind-bending twists, “Nona the Ninth” is a captivating blend of science fiction, fantasy, and gothic horror that will leave readers spellbound until the very last page.