Middlegame is a 2019 science fantasy/horror novel by Seanan McGuire. It was well-received critically, winning the 2020 Locus Award for Best Fantasy Novel and garnering a nomination for the 2020 Hugo Award for Best Novel. A companion novel, Seasonal Fears, was released in 2022. The series is also related to The Up-and-Under series, written by McGuire under the pen name A. Deborah Baker. Source: Wikipedia (en)