Persistance of memory was not one of Amelia Atwater-Rhodes best books, I think the biggest problem was that she didn't flesh it out enough. It started out good and had a really interesting premise, but she concluded the book too soon, and like most of her books it didn't seem like she got to a true ending. If the book had ended up about 350 pages I think she could have made it a lot better and gotten the characters to end of their story, instead of 3/4 like she did. The book follows a 16-year-old mental patient named Erin who has been in and out of different hospitals for her entire life, and has recently enrolled in a public school for a couple of classes. She hasn't had an episode for almost two years, so her psychiatrist trusts her more than she ever has. But soon Erin starts having problems again after she wakes up as another person, a vampire named Shevaun who is over a thousand years old and extremely strong. Naturally she thinks she going crazy (again). But she soon finds out that Shevaun exists and learns that she's been crazy her entirely most of her life because of what her "alter ego" Shevaun did at her birth. But I'm trying to minimise spoilers so if you like supernatural/fantasy fiction you should try this book.