Assisting Caroline, who is being bullied at an all-girls' prep school, guardian angel Aria works to uncover the hidden pain that afflicts both Caroline and her former best friend, who has become the bullies' ringleader.

"Aria Blue seems like an ordinary twelve-year-old. She loves music, and colorful shoelaces, and taste-testing various types of cookies. But there is much more to Aria than meets the eye. She can use her shadow like a door to travel from place to place. She can dream things into existence. And she can see when certain people need help. Because Aria is a guardian angel. Her mission? To find and guide three different girls--Gabby, Caroline, and Mikayla--through...