These comments apply to the entire series.
What I loved about this series:
*There is always a real mystery. I seldom figured much out early. Specific plot elements made me prefer one book or another, or did not appeal to me as much in one book or another, but I don’t think there are any real low points. All the books range from good to excellent.
*Cool forensics, plus cool crime lab stuff. Really enjoyed all these elements.
*Lots of action. In every book, you can expect the protagonist and perhaps others to be involved in one exciting situation after another. Diane is not generally careless, but, damn. If it were me, I would load up with two guns, two flashlights, and two Dobermans. One of anything probably wouldn’t be enough.
*I liked the protagonist a lot, and what I like best of all is that when Diane fights off an attacker or gets away from a kidnapper or whatever, this is not because she is so very special. It’s because she fights really hard and keeps fighting till she gets away. If her attacker shouts, “I just want to talk!” or “I’m not going to hurt you!” she keep fighting. I appreciate this very much. I have no patience whatsoever for a protagonist, especially a female protagonist, who, when attacked, dithers and wrings her hands and practically has the word “victim” painted on her back.
*Basically competent and well-developed secondary characters. I don’t much care for the sort of mystery where the forensic anthropologist (or whoever) solves the mystery because the police are too stupid to solve anything. The protagonist shouldn’t shine only because most of the secondary characters are ridiculously incompetent. That doesn’t happen here.
I will add that one exception to the generally high level of competence is the tendency of most characters to say, “Of course, this could just be a coincidence.” Uh huh. Sure. A coincidence.
Where I had quibbles:
*I would often have liked a bit more of an epilogue and a bit more continuity. For example, at the end of one book a secondary character was kidnapped and really scared, though not hurt. There is no emotional fallout whatsoever from this situation in the next book; in fact the incident is never mentioned again and might as well never have happened. I was disappointed by this.
*Stylistically, Beverly Conner and I obviously have a philosophical disagreement about the use of the past perfect. I think it should be used where appropriate. Conner thinks it should be used only when absolutely necessary and sometimes not then. That final clause is the problem: because of what appears to be a reflexive avoidance of the past perfect, sometimes her use of the simple past tense produces sentences that are awkward or even a little bit confusing.
Otherwise, I think Conner’s writing is solid and straightforward. Her dialogue is generally pretty good and sometimes very good – I’ve noticed before that good dialogue is important to carry me past writing quirks that would otherwise stop me from enjoying a book. Conner also writes good exposition, which for me also serves this purpose. Someone less interested in the science embedded in these books might not find that to be the case.
Overall
I loved this series and am pleased to find out from Conner's blog that she's continuing with it. I'll be happy to read the Diane Fallon series as long as she goes on writing it.