I had to actually research this book because it's not often I feel like I'm reading something written for TV but this is what She's Out feels like and it appears that I was right to be hahing this feeling.
La Plante originally wrote the Widows trilogy as a British television series and this is the third installment. I haven't read the first two books but I don't think I'll be going for this trilogy any time soon. Didn't like the way it was written and the story feels tired and overdone. Just not my thing!