Here's the gimmick: Halting State opens when a virtual bank in a distributed, multiplayer world is robbed by a horde of orcs who march in and clean it out of all its prestige items and other loot, a direct frontal assault on the game-economy's integrity. The losses run to millions, which triggers an insurance audit -- led by Elaine, who's not only a forensic accountant, but also a sword-swinging LARPer who likes her espionage alternate reality games. She contracts with Jack, an extraordinary gamespace hacker who's just been made redundant from his Edinburgh gaming company, to serve as her native guide, and finds herself working alongside of Sue, a lesbian mom detective-sergeant with the Edinburgh Polis who has been called to the scene with a report of a "robbery" and is now duty-bound to pursue the matter in compliance with the tenets set out in the ISO 9000 binder for police-stations.
I've been following Halting State since Charlie and I sat in a coffee shop in the Strand in London about five years ago and talked about a novel about a "multimillion dollar heist in gamespace." It's a sticky idea, and one that a lot of us are going to end up playing with over the years -- but it's also clearly one that Charlie has had an indecent amount of fun playing with. This is his tightest-plotted novel to date, a detective story with a million perfectly meshed moving parts, and a hundred magnificent surprises that had me gasping and shouting YES (to the general alarm of the guy in the next seat on my airplane).
This is the apotheosis of Stross -- a book chock-a-block with great ten-minutes-from-now technology (big hunks of the plot hinge on anonymized digicash, onion-routers, FreeNet crypto, and GNU Radio), RPG humor straight off Phil Foglio's old Dragon Magazine strip, and an impassioned series of valentines to Edinburgh, Charlie's adopted hometown.
Blend an Iain Banks thriller with a copy of Count Zero, throw in the Tokyo Games Show and a Bourne movie (and possibly a Bourne shell) and you've got something approximating Halting State. This is a book that will change the way you see the way the world works.