Cat Perkins and the Impending Disaster

Cat Perkins had always thought she was relatively normal until the day she saw people who seemed to only come out when she was alone. They followed her everywhere and she was at her wits end when they would not give her a moment of peace. At last, she found someone who could help. But would he prove to be more of a pain than Cat had originally thought?
This is my first story, sorry if it's a bit crap!