If you go into this book looking for something like the Tom Thorne series then I'm afraid you'll be disappointed. The idea is quite nice, but the execution a little lacking. The entire story being told from one perspective unfortunately made all the characters except the narrator feel quite flat and uninteresting. 

The gradual breakdown of the narrator is done very well though, and they're definite positives when reading this. It's very light and can be quite a page turner at times, however it lacks the gradual piecing together of the mystery found in others of the same genre and instead is a bit over reliant on red herrings.

I find Mark Billingham a bit hot and miss as an author and unfortunately this one is just off the mark for me