I am hesitant about rating this book. It was redundant and explained everything using pop references that will date the book. She established certain things that the beginning of the book that suddenly changed at the end. One example is Zoe's ability to be solid while out of her body. In the beginning she had to really think about it. At the end it suddenly became something she did naturally without thought. There was no lead up to it.I did really enjoy the characters, the fast pace of the story and the plot.