I NEVER write reviews. But I just had to this time. I kept reading, hoping to be blown away by a major plot twist. Horrible. The ending makes zero sense.
Throughout the book, we're literally in Sarah's head and there's no sign of her being the killer AT ALL. She's desperately trying to exonerate Adam, and all of a sudden towards the end, we find out Sarah did it. Like zero connection. Terrible terrible plot. I'd want to give it a zero. Such a horrible waste of my time.