In 1973, I read George Orwell's "1984" in one sitting with my hair standing on end. I won't beleaguer this review with how prophetic some of Orwell's content is, you can probably come up with a few examples before you finish reading this review.
It's a strange and unnerving coincidence I just read "Halting State" 11 years from the time the story takes place in 2018 and yes--in one sitting with my hair standing on end. I definitely think the world Stross is proposing is possible, perhaps even probable.
The plot---Edinburgh detective Sue is called out on a robbery case only to discover the victim is a corporation and the robbery took place inside a computer game. She's about to dismiss the case when she realizes the theft could have serious market implications.
Enter Elaine Barnaby, a forensic accountant for the firm's underwriter who's there to prove that the firm was somehow negligent so her employer doesn't have to pay the inevitable claims. She quickly realizes that her live action role playing (LARP) experience does not qualify her to examine a bank in a game world. Jack Reed, recently unemployed game programmer, is hired to serve as her decoder and native guide.
The three quickly discover the theft is just the beginning. The thieves' motivation could be anything from stock market manipulation to taking down the grid. The novel moves at a brisk pace with very little time for a breather in between events.
Stross deliberately challenged many of the writing conventions in "Halting State." First, the novel's written in second person--referring to characters as 'you.' Initially, the tense seemed accusatory and offputting; however, once I got into the plot of the book, 'you' became irrelevant. I would actually recommend this book to anyone who was considering second person narrative.
Also, "Halting State" offers three point of view characters: Elaine, Sue, and Jack. This, combined with the second person, does prevent the characters from coming to life as readily as first or third-person.
Finally, Stross mixes geekspeak with a Scottish brogue thrown in. The mixed dialect he's created is sometimes cumbersome, but if you can hear the brogue in your head it's easily overcome and becomes almost lyrical.
I have two concerns related to this book. Foremost, "Halting State" should not just be pigeon-holed in science fiction--or even mystery. Literature might be a better classification to reach a wider audience.
Additionally, while I think Stross did very well breaking editorial convention in this novel, he may well also have severely limited its appeal. That is regrettable because the trends he touches on politically, technologically, and sociologically are well worth the read.