One Dark Window by Rachel Gillig

A dark fantasy novel that follows Elspeth Spindle, a young woman harboring a dangerous spirit known as the Nightmare, as she navigates a world filled with magic, deceit, and political turmoil.

This book contains: alcohol, BDSM themes, body horror, dark content, deception, divination, explicit sexual activities/nudity, kink themes, murder, psychological distress, potentially patently offensive content, potential prurient content, profanity (minor),
psychological horror, self-harm (rituals), sexual innuendos, stealing, torture, toxic relationships, and violence.