Cynthia Hand is a great writer, it just needs to be polished up a bit. She had a different storyline here, but there were some similarities that I have seen in other books that I have read. 
 Clara is a quarter angel. Her Mom is a half angel. 
 When her mother told her she was an angel, she had a hard time believing it herself. But, now the family is packed in a car headed from California to Wyoming so that Clara can fulfill her "purpose". Every angel has a purpose, they see visions, little snippets of it in their head. Clara's purpose is to save Christian from the woods fire. She can figure out that much from her visions. Or so she thought. 
 The book started slowly, it took me quite a few chapters to really get interested, but once I did, I NEEDED to finish and get to the end. Keep on the lookout for Tucker. He is another yummy character that the girls are going to swoon over! 
 I will be on the lookout for Hallowed (Unearthly 2) which is due out in 2012.