I love Brookmyre's books in general; his mix of wild, often comic-book action, dazzling Glaswegian wit and ever-increasing doses of satire make his works both fun and intelligent. In many respects he reminds me of Pratchett.
Therefore I am sad to report that this one is, in the end, a clunker. For two thirds of the book we are treated to some vintage Brookmyre; the terrifying kids of St Peter's High are on the rampage, and the results are both hilarious and touchingly accurate in their observations of teenage angst. Simultaneously to this, we have something weird going down at the local top secret underground MOD facility. The coming together of the two threads is obvious from the start.
And at this coming together point it all goes horribly wrong. The book them abruptly turns into a deeply dull zombie-style gore-fest, decorated by a cliched we-all-stand-together fightback, before we reach the sci-fi finale. Unfortunately said finale is achingly plodding and predictable and would be something of an embarrassment to a fifties B-movie.
I was hoping that something cunning and witty would appear to explain everything rationally, but as the gore fest picked up speed it became worryingly apparent that the conclusion would be every bit as obvious as it appeared. The liberally sprinkled contemplations of faith and its counterpoints failed to hide the overwhelming daftness of the underlying premise, and the undeniably breathless pace (he's not lost his technical skills) unfortunately lead headlong to grave disappointment.
All Brookmyre's books require suspension of belief to some extent, but there are limits, and this barrelled past them by a distance.
This is a real shame, because some of the writing in the early part of the book is great - the coach trip that moves from Christian singalong to conflagration to "Volvo and venison interface" is a comic classic. Unfortunately on this occasion that doesn't make up for a fundamentally flawed concept and a torrent of cliches once the action starts. In addition, there are quite a lot of retreads from previous books here: the outward-bound school, the school trip/reunion type theme, the seige and consequent A-Team style resistance, and so on. Overall it feels like Brookmyre has struggled for his usual originality here, and has compounded the problem by deciding to take the plunge outright into the sci-fi/horror genre.
You can't win them all.