Sweet Liar

He's a rich Taggart romance-novel-dude powerlifter with a big family and a sweet townhouse!  She's an emotionally locked down country mouse forced by one of those Improbable Wills to go to New York for a few years to investigate a crime that may or may not have happened to her dead or not dead grandmother and then they... put on a show about it.  Seriously, there is no way to describe this book, you just have to experience it.  There's no present-day sexual violence in this book, but her ex-husband emotionally abused her and in 1928 all sorts of awful Tommy gun business went down.