Spirit Hunters by Ellen Oh

This book is scary fun! Harper hates living in DC and she hates her new house, and things start getting weird when her brother says he has a new best friend named Billy. The thing that troubles Harper is that no one else can see him but she feels a presence in her brothers room. And it scares her. She’s also getting bits and pieces of her memory back from when there was a fire at her old school and she was sent to the hospital. What’s going to happen?