Not what I was expecting...
This was a straightforward murder mystery/crime procedural. It was pretty fast-paced, in that it didn't linger over too many unnecessary details or swamp the reader with too many potential suspects just for the sake of confusion. I can't tell if the missed words throughout were typos or just very British. Given how I know some Brits to talk, I'm leaning toward the latter.
There were some plot holes. Some of the main evidence was in Nick's hands when he had no other officials with him to verify when and how he got it and that he went nowhere else with it, then it was in his office for a couple of days before he turned it over to evidence. Surely, that couldn't be admissible in court, since there's no chain of evidence. That's not even getting into what he did with some of the evidence later on.(show spoiler)
I did twig onto the perp about halfway through, so that reveal wasn't much of a surprise. The final reveal about how Nick's friend Jake ultimately died was not particularly satisfying.(show spoiler)
The main characters are all pretty straightforward also since there's no time to get to know them outside the investigation. That didn't bother me, but it might others. What did kind of bother me was that Nick was some sort of super detective, competent in areas that aren't even his expertise.(show spoiler)
The author appears to assume all the readers are familiar with rock-climbing terminology since there's zero explanation about the E7 6c and other such references made. Clearly, it has something to do with the difficulty of the climb - I'm guessing the higher the number, the more difficult it is - but since there's no explanation given, I have to wonder why such distinctions were even there. Just say it's an expert climb versus a novice climb or whatever.
I did like it because it was quick and didn't get sidetracked, but I don't think at this point that I'm going to check out any of the other books in this series.