Deadbeat cab driver Ed Kennedy begins receiving cryptic messages in his mailbox--clues that lead him to people in need of help. Although Ed doesn't know who has chosen him for this or why, he moves ahead with his assignments. The book is moving and thought-provoking, but I would NOT classify it as YA. The themes are mature and, at 19-20 years old, so are the characters. There is a LOT of profanity, so be warned if that turns you off.