The best of the series so far, and that is I think because there is (at last) some variation in the victims. Yes, most of them are still women, but they're not being targeted because they're women, they're being targeted because of they're victims of an industrial coverup who happen to be women, and that makes a considerable difference. I like mysteries and thrillers, even if they're not the genre I read the most of, but it gets a little tiresome when so many of them follow the same victim script. The Sinner, by contrast, is clearly inspired by the disgraceful Bhopal disaster, which gives it a focus on science and industrial ethics... something I'm very interested in, so it was good to see it turn up unexpectedly. Under the circumstances, I could have done without the incest subplot, which drags in that same tired carryover of sexual violence, but progress is progress, and for the most part this was a fast-paced, enjoyable read that is something a little different within the genre. I liked that there was a little bit of character development for Rizzoli as well.