Dead Scary: The ghost who refused to leave

Adam is an ordinary boy, except for one thing. He can see and talk with ghosts.
When his family moves into what seems like the home of his dreams, Adam finds out it isn't his dream home after all. Edward Lawrence, a bossy ghost who was Adam's age when he died, regards the home as his own and he doesn't want to share it with an annoying boy who can see him.
After Edward fails to convince Adam to get his family to move out, he seeks powerful help from the earthbound spirit world to get rid of...