I can't help but think that this is the female version of the Showtime series Dexter.

I do think that the marketing for it was off as it always felt like I saw it sold as chick lit or something I wouldn't be interested in. I'm glad something possessed me to pick it up.

There did seem to be a few plot holes that were brushed over, but nothing too horrible. It's interesting to compare it to other works from a social and gender perspective. In particular I'm thinking of "The Trial of Mary Dugan" by Veiller from the early 1900s and how that female character was handled.