Very much a book of two halves.
The first half introduces a futuristic, cyber-punky world of "mods" (augmented humans) and synthetic humanoids; grizzled-cop interrogations, chases and plasma-bolt inflected action sequences.
In short, it's entertaining and fast paced; the humour-inflected personality of the author's "voice" really helps things along.
In addition, the book's only really interesting character – Celia (featured on the cover) – makes for a worthy diversion and the book's chance to do something a little different.
The back half of the book however did its best to lose all my attention.
Certain events flip the switch on Celia as a character, turning her into little more than pouty literary furniture.
There are a several chapters that focus on the protag (Cutter) looking at himself. Cutter is part leather-jacket-wearing-gun-toting stereotypical cop, part complete moron – as such, these kinds of passages I found a bit of a slog to read.
The action is still present and correct, but comes off as less-thrilling, more final-boss-battle style (i.e. over-long and OTT).
The humour in the writing virtually disappears completely and the final chapter is worthy of little more than an eye roll.
There are apparent attempts to explore the relationship between synthetic and organic life, and what it means to be alive; this largely comes off as a bit ham-fisted and the book would be all the better without those aspects. (unusually)
Overall, a (relatively) short thrill-ride of a book, with some nice atmospheric world-building and action sequences – just one that loses all pace well before the denouement, and lacks for compelling characters.