This book is so odd that the actual mystery is inconsequential to my review. Red herrings scream red herring as soon as they are introduced and you'll spend most of your reading wondering when the actual murder is going to happen. Because of this, my focus ended up on the language.
Do you remember which year Swatch watches and Converse shoes were the rage? 1983? 1984? At first I thought the old cultural references were just because the author would turn out to be older and so knew older books, movies, and TV, but now that I've finished the book and noticed that the older references spilled into characters' dress and surroundings, I think the manuscript itself is old. There are random, awkward additions of cellphones and social media that do not fit in smoothly and at some points, I swear the book includes manuscript critique notes!
The author's bio says she was born in New York in 1969 but moved to London as a teenager and lives in England now. This is perplexing to me as currently, the writing sounds like an American who has looked up some British terms but doesn't full understand how to use them. It is also terribly inconsistent. For example, a knitted woolen pullover is referred to as both a jumper and a sweater. That's a fairly innocuous example, but these word oscillations happen frequently enough that if you are an American with any familiarity of British English, you'll end up annoyed and frustrated. Either Harley (the main character) needs to have a known fondness for more American terms or the author needs to do an edit pass that focuses strictly on vocabulary!
Which leads to overall characterization - it is wobbly at best. Characters' personalities flip flop frequently in a matter that again feels like poor editing post-input from one of the author's friends or a writing critique group. Then there is the sex... actually, there isn't any sex; it is simply that Harley thinks about sex non-stop and infers it frequently. The guests at the Frazier Estate are made out to be randy rabbits, until suddenly they aren't and the one character that one doesn't expect to have had sex is actually the one who did. Watch out for numerous copy edit errors, usually a missing word or word inversion within a phrase. There are also some odd favorite words which jump out, such as biceps. Throughout the book, characters touch, grab, and admire biceps - never a forearm, arm, or shoulder.