I don't hate this book, but I can't say that I loved it. 
 It's basically a story of a girl who was kidnapped and kept in a man's basement for months with three other women. The story follows her struggle, her boyfriends plight to bring her home, and her kidnapper's story. If I had to judge, I would say that this is a sub-par version of 'Room'. It reads like a YA novel, which is good, because it is a YA novel. 
 The narrative does not vary from person to person. The chapters written in the mind of the kidnapper have the same thought process, language, and speech patterns as those of the kidnapped, and her boyfriend. If you are in a situation where you have to put down the book and pick it up again over and over, it can get confusing. 
 I did like the portion of the book that was written after the main character was freed. I think the mindset of the character was very understandable to the situation, and I was not unconvinced that she had been effected by her experience. I wish there was more after the rescue and less during the hostage period, it read a little boring because of the repetitive nature of their routine. 
 Overall, good book. I don't plan on reading the others in the series, I don't even really understand how they are supposed to tie together. I think this would have made a better standalone book, especially because people don't really want to read such dry literature in continuum.