"Chasm City" is a science fiction novel by author Alastair Reynolds, set in a distant future where humanity has colonized various planets. The story takes place in the city of Chasm City, located on the planet Sky's Edge, known for its vast chasms and towering structures. The narrative follows the character Tanner Mirabel, who navigates a complex world filled with advanced technology, political intrigue, and the remnants of a devastating conflict. The novel explores themes of memory, identity, and the impact of technology on society. As Tanner uncovers the truth about his past and the city’s dark history, he encounters various factions and individuals, each with their own motives. The richly detailed setting and intricate plot make "Chasm City" a compelling read for fans of the genre.