"In fact, Six had always been afraid of Seven. It wasn't just that he was odd. It was his strange intensity, the way he stared too long with those small, dark eyes. But somehow, they always seemed to end up standing next to each other in line. When Nine went missing, Six felt sick, like the hole in his belly was growing. He thought about all the times he and his old friend had been mistaken for twins. And now Seven's coyness about Nine's whereabouts was unbearable."