Tamsyn Muir is a New Zealand author known for her work in the fantasy genre. She gained significant recognition for her debut novel, Gideon the Ninth, which combines elements of science fiction, fantasy, and mystery. The book features a unique blend of necromancy and swordplay, earning Muir a dedicated fanbase and critical acclaim. Muir's writing is characterized by its witty dialogue and complex characters, often exploring themes of identity and power. Following the success of her first novel, she continued the story in the sequel, Harrow the Ninth, further expanding her imaginative universe and solidifying her place in contemporary fantasy literature.