Tamsyn Muir is a horror, fantasy and science fiction writer. She is the author of the New York Times bestselling Locked Tomb series, which begins with Gideon the Ninth, continues with Harrow the Ninth and Nona the Ninth, and concludes with Alecto the Ninth (forthcoming), and the novella Princess Floralinda and the Forty-Flight Tower. Her short fiction has appeared in Nightmare Magazine, F&SF, Fantasy Magazine, Weird Tales, and Clarkesworld. She has won the Locus and Crawford awards, and been nominated for the Hugo Award, the Nebula Award, the Shirley Jackson Award, the World Fantasy Award, the Dragon Award, and the Eugie Foster Memorial Award. A Kiwi, she has spent most of her life in Howick, New Zealand, with time living in Waiuku and central Wellington. She currently lives and works in Oxford, in the United Kingdom.