Lia and Cassie are best friends, competitors in a deadly contest to see who can be the skinniest. But what comes after size zero and size double zero? When Cassie succumbs to the demons within, Lia feels she is being haunted by her friend's restless spirit. Laurie Halse Anderson, author of award-winning Speak, explores Lia's descent into the powerful vortex of anorexia, and her painful path toward recovery.