Set in the present day, this novel is scary--because all of this could happen. I am left wondering exactly how much of this is happening; it's clear that some of it definitely is.
Building on the story from the first book in what is planned to be a trilogy, Motherless picks up several years after Fatherless leaves off. All the major characters from the first book play main roles in the second as well. While this book can stand alone, I definitely think that the first book is important in that it sets the stage for plot events in this one.