Maniacal, psychotic, maddening! My exact thoughts upon finishing this book: Why did I just read this book??? 

ALL.THE.EMOTIONS. 

Do I love this book? Do I hate this book? Does that even have any bearing on this book being a good, twisty, infuriating thriller? No, no it doesn’t. 

If you enjoy a good thriller.... if you love to hate the characters.... if you enjoy an enraging ending... THIS is the book for you! 

As a last note- the book does get a bit bogged down in sailing minutiae, and I did get a little bored by that. It takes some stick-with-it-ness to get to all the bad decisions and sinister behavior.