Paper Towns by John Green
Paper Towns is a Abraham Lincoln Award nominee.
Quentin Jacobsen has been in love with his next door neighbor Margo Roth Spiegleman for most of his life. One night she convinces him to accompany her on a crazy night of pranks, but the next day Margo is gone. She has left him clues to finding her, but the closer he gets, the more she remains a mystery.
John Green explains what the book is all about: