The new neighbors are not who they seem... Siblings Matt and Sophie aren't thrilled when their parents move them away from the country to a boring neighborhood in a new development. The only house that stands out is the one next door--an old stone farmhouse whose owners have refused to sell to developers. They even have a horse in the pasture. And Sophie hopes the owners will let her ride it if she helps take care of it. But something is not quite right about their new neighbors, and Matt and Sophie are determined to find out what exactly is wrong with the house next door.