'No one is scared of the dark, they are scared of whats in it'

This book is based on a torn broken vulnerable girl who is petrified of not only her step mom but also the dark, she feared it and she didn't know why she constantly reminded herself no one is there, then Harry comes into her life for about an hour already and she is saved, or is she?, she doesn't have a clue of what is capable of and what he wants is what he gets and if that meant ending a few lifes in the mission.