I'm the Girl

When sixteen-year-old Georgia Avis finds the dead body of thirteen-year-old Ashley James outside the gates of an exclusive resort, she teams up with Ashley's older sister Nora to find the killer. She is thrown into a world of unimaginable wealth and privilege-- and the fight for her life. As Ashley's killer closes in, it may not be a matter of who is guilty, but who is guiltiest. -- adapted from jacket