On a hill on the outskirts of Sweet Valley sits a beautiful old Victorian house. It stood empty until a few weeks ago, when a new family moved in...the perfect clients for Elizabeth and Jessica Wakefield's baby-sitting service.... The Wakefield twins and their friends from Sweet Valley Middle School love babysitting for the Riccolis. Until little Juliana Riccoli starts having horrible nightmares. One night she wakes up crying, saying a monster attacked her. The twins tell her that bad dreams aren't real, but Elizabeth is secretly afraid. If the monster isn't real, why does Juliana have deep scratches in her back?