She was very blurry, not at all human-looking. There were huge dark eyes, and a kind of mane made of light, and when she spoke, I couldn't see a mouth moving, but I felt her words, like a breeze against my face, and I understood her completely. 'We've come because of the baby,' she said. 'We've come to help.' All Steve has to do is say, 'Yes.' But 'yes' is a powerful word. It is also a dangerous one. And once it is uttered, can it be taken back?