I really liked this book! It was full of love, danger, and mystery! Ivy is a seventeen year old girl, who's world changes dramatically after the death of her highschool lover Tristan, and she has sworn to live a life without believing in angels. Day by day, she goes on, missing everything about him, oblivious that he is watching her and is right by her side. Literally. Tristan is now her guardian angel. He has to protect her, but can't touch her. He has to warn her, but can't talk to her. He has to make her believe in angels once more to save her, but can't convince her. Now that his killer is after her, Ivy is in more danger than ever before. She knows that in the end, she has to let go to what she desires most and welcome new love back in.