48 Hours Only | Save up to $12. Get the code »

As the friendship between Kori Kitzler and Serena Moore solidifies and their lives entwine, Serena doesn't know where she begins and Kori ends. But when a twist of fate yanks Kori away from Serena, she will need to find a way to complete her best friend's life left undone.

Undone 2010, Walker & Company, New York

ISBN-13: 9780802720757

Trade paperback

Undone 2008, Walker & Company, New York

ISBN-13: 9780802797636