I thought this was a great read until the ending. But the book needs to end! Margot's chapter should have ended like Krissy's chapter or it should have been clear that Margot would escape, but leaving it ambiguous was just annoying. It ended up just feeling unfulfilling and rushed. It made me examine the rest of the book more closely, and other flaws jumped out. Like Margot just getting too easily sidetracked! She couldn't get anything done - like making a copy of that key! Even though I enjoyed the first half or so - and particularly Krissy's chapters - I was just annoyed in the end.