Breezed through this and found it very engrossing. McCrery is good at the grim, gnarly realism of crime fiction. Samantha Ryan, the protagonist who is a pathologist, concludes that a boy killed in a car crash has probably been strangled, goes the police to inform them it is a murder and they are basically like "improbable" isn't enough, unless it is "impossible" the death was accidental, they won't launch a murder inquiry because of pressure from higher ups about budget etc. so Sam has to spend pretty much the first half of the book doing the police's work for them and digging up evidence to convince them. It's a cynical but probably accurate depiction of reality, McCrery is a former police officer so wouldn't surprise me if he's drawing from some of his own experience there.
The only real sticking point is that McCrery clearly isn't, or wasn't at that time, very tech savvy, for instance he uses terms like "web page" and "web site" (sometimes with a space, sometimes without) interchangably to refer to the equivalent of an IP address, and "Net name" (usually capitalised) to refer to chat room usernames. This wouldn't bother me so much except that the internet becomes pretty central to the plot and the killer's MO so it gets a bit distracting. I guess I should maybe give him some slack with it being 1998.