Once upon a time there was a girl with a very vivid imagination. She imagined that she had an amazing husband (which was true), had a beautiful daughter (which was true as well) and also did more than her fair share of the nappy changing (which was not as true). More than anything the girl like to imagine scary monsters.
It is not that she particularly liked monsters, they were scary and she was scared of them, it was that her imagination was often out of control and she would get worried about them pretend attacking her. If someone told her that her shadow was a black hole and would swallow her up then she would spend her whole time shining a light at her foot to rid her of it.
Then one day The Girl went and saw a play about ghosts.