'''Chasm City''' is a
2001 science fiction book by
author Alastair Reynolds, set in the
Revelation Space universe. It deals with themes of
identity and
memory, and many of its scenes are concerned primarily with describing the unusual societal and physical structure of the titular city, a major nexus of Reynolds's universe.
Synopsis
''Chasm City'' is framed and largely written in the voice of
Tanner Mirabel, a security expert who has come to Chasm City to avenge the death of his former client's wife at the hands of a "postmortal" noble named
Argent Reivich.
Tanner arrives to find that
Yellowstone, the most advanced civilisation in human history, has descended into squalor; an alien
nanotech virus known as the
Melding Plague has wreaked havoc throughout the system. Chasm City, a dense forest of
mile-high
shapeshifting skyscrapers, has melted into a slum. The
Glitter Band, a sparkling diorama of ten thousand orbital habitats, has been reduced to a
Rust Belt of a few hundred survivors, mostly primitive and pre-nanotech antiques.
In this chaos of plague and desolation, Tanner seeks his
prey, only to discover that Reivich's motives are more complex than he originally thought. In the midst of his hunt, he begins experiencing virus-induced
flashbacks from the life of
Sky Haussman, the founder of his homeworld,
Sky's Edge, who is both revered and reviled for the crimes he committed for his people.
From the depths of the gas plume at the heart of Chasm City, to the
aristocratic canopy spanning what remains of the skyscrapers, Mirabel begins to unravel the mystery of the Melding Plague.