Having a housemate can be a mixed blessing. At its best, the arrangement can be mutually beneficial with both parties gaining lifelong friendships. But at its worst, having one can mean inviting an annoying, rude, or even a criminally minded lunatic into close proximity with ones personal space. Too often it is that the trauma can far outweigh the financial benefits. So it was with relief that Susan had been able to rent a room to her long time acquaintance, Holly.