The premise of this book was interesting, and the resulting story was quite suspenseful. Initially I found myself rooting for Jessica as I appreciated how she tried to take care of her family. I liked seeing the personal growth she made by the end of the book, though she still had some room to grow since some of her actions, even then, displayed questionable ethics. Dr. Shields was completely creepy which did make for exciting reading. However, some of the questions she had could have been answered far more easily by a private investigator. And the purpose of her so-called study, her test? It seems there was only one answer she was willing to accept, but such an expectation is neither scientific nor realistic. As a result, while I found the story fairly diverting, the character of Dr. Shields at times made it border on the ridiculous.