This was a good book, except for two things: 1. Maybe I'm just used to writers like Michael Connelly whose books are a third as long as this one was, but I don't think it needed to be over 1000 pages. I was quite tempted a few times to skip to the end although I didn't. 2. Rowling/Galbraith needs to make up her mind about whether Robin and Strike should be together, because it's gone on far too long.
The portrayal of online bullying and hate speech was painfully accurate. I'm assuming Rowling drew inspriation from being at the centre of several online controversies.