It is stated in The Ghost Law chapter 5, pg. 49, paragraph 2 that if a person saw you doing something inhuman that you should act normal until they believe it was just their eyes playing tricks on them. So like an idiot I stared and let a tray full of French fries go through my lap.
Parker wishes she was a regular teenager. One who can hangout with other kids and go to school, even just eating once in a while. Except she isn't someone who has parents and siblings, teachers and pets. Parker is a ghost.
Now Parker spends her time with her friend Drew, also a spirit. Until they find Nathan Hamilton, a fourteen year old boy who can see the afterlives, as the council calls them.