Hi ray, it was some time ago now, but i recall really enjoying it, and being a bit surprised at how good it was.
not that i would have expected something below parr from hugh laurie, but i remember thinking it was just not how i'd imagined the book would be when i bought it.
now that you already have it i would especially advise reading it.
I may give it another airing now actually, thinking about it!
i also have enjoyed quite a few books by charlie higson (ralph in the fast show) they are quite serious, thrilling and dark.
let me know if you enjoy it too