Bob Howard is a computer-hacker desk jockey, who has more than enough trouble keeping up with the endless paperwork he has to do on a daily basis. He should never be called on to do anything remotely heroic. But for some reason, he is.
This is Must Read stuff for Lovecraft fans, but if you like the work of Alan Moore, Warren Ellis, or Grant Morrison's THE INVISIBLES, then this is more or less guaranteed to flip your wig.
Briefly, the story revolves around agents for a British intelligence organisation tasked with suppressing certain mathematical concepts; the ones that are the keys to other dimensions, most of them containing entities implacably hostile to mankind. The trouble is that they happen to be very interesting mathematical concepts, the ones that are close to the cutting edge of computer research, and there are a lot of people out there that are working on them. In the past it took thousands of man-hours to screw up reality, today a laptop can do it in sceonds. This can result in horrific accidents and is potentially the ultimate terrorist weapon. There is an uneasy peace between the world's intelligence agencies, which pool resources to counter this threat, but things haven't always been that way. The ultimate threat of the book is a remnant of Nazi research from the second world war, and turns out to be much nastier than expected.
I enjoyed everything in this book, from the home-life of the hacker/agent hero to its final apocalyptic scenes on a dying alien world. Thoroughly recommended.
I wrote this before seeing the publisher's description, and it's interesting to see how similar it is. That possibly means it's unnecessary, but that's life...