Night Creeper

As you lay in your bed at night, as you begin to drift off into a deep sleep, do you sometimes hear the creaks and groans that your home makes as the temperature outside begins to drop. Does it ever go through your head that instead of it being the walls and floors creaking, it could be a burglar who's broken in with the intention of robbing or killing you?
  In this story, that's exactly what happens to some unsuspecting people even though they have some of the best security devices on the market. When someone begins to kill people without any obvious reason or without taking anything, DCI Geraint has to try to get inside the mind of the killer and try to prevent him or her from killing again. Unfortunately, he finds that he becomes hampered by the very people he needs to depend on, to help him solve these crimes, the police themselves!