An Unkindness of Ghosts is a science fiction novel by Rivers Solomon that explores themes of race, class, and power. The story follows Aster, a dark-skinned sharecropper living in the low-deck slums of a space vessel organized like the antebellum South. When she discovers a link between her mother's suicide and the death of the ship's sovereign, Aster embarks on a dangerous journey to uncover the truth and fight for her freedom. The novel offers a powerful social commentary on the injustices of systemic oppression and the resilience of the human spirit.