One Dark Window by Rachel Gillig

BRAND NEW paperback! A dark, gothic fantasy novel by Rachel Gillig, focusing on Elspeth Spindle, a young woman who survived a mysterious fever and now harbors an ancient, mercurial spirit called the Nightmare inside her head. The story follows Elspeth as she navigates a world where dark magic is infecting her kingdom, and she must embark on a quest to find a cure, all while battling the increasingly powerful Nightmare within.