"No frills thriller"
I enjoyed the writing style. It was easy to read, the characters were readily identifiable and three-dimensional. What you saw was what you got. Most thrillers, or police procedurals are cold & clinical; it felt more real to have Gus mentioning what he had for breakfast, the pub quiz and sporting events going on while the case unfolded. It's called real life. It can be a mess sometimes. I prefer that approach to the sanitised, politicised version that TV often portrays.