For the people like me, who some times have a hard time separating reality and fiction after they put a book down— serial killer novels are the worst. Why? Because serial killers AREN'T fiction. They are one of the scariest and real threats out there (reading these can leave me paranoid for daaaays).At the same time, researching the psychology and motives that drive serial killers is disturbingly fascinating. Also, reading or watching scary situations allows us to experience emotions and situations in a safe space.