'Sometimes it feels like I'm the one who's missing, like I'm not really present in my own life any more — I'm like a ghost or something, wandering through school or home or town looking on at everything that's happening and not really a part of it at all.' Ellen and Maggie have been best friends for as long as they can remember — sharing clothes, passions and secrets. When Ellen goes missing, Maggie feels completely alone. Looking back over the upheaval that led to Ellen's disappearance, Maggie tries to make sense of her friend's actions. At school and at home, she feels no one understands what she is going through — except maybe Liam, the boy next door who has always had feelings for Ellen. How will Maggie cope without her best friend? And where on earth is Ellen?