From a 15yo girl, this book was stupid, it had no resolution at all and was uncomfortably stressful with no relief ever. Good character looses, bad character wins.
SPOILER ALERT!!!!!! the good character Ivy ends up in a psych ward whereas the bad manipulative twin Iris roams free and takes over Ivy's life while she's locked up. After this book, I have no interest in Natasha Preston's other books.