This method is used in the real world, and the first step is deciding which type of serial killer the cops are dealing with.
While no two serial killers are the same, everyone can be classified into one of two large groups: an organized, or a disorganized serial killer.
Former FBI profiler Roy Hazelwood helped create the FBI's dichotomy approach to better understanding serial killers. Based on a large database of closed serial killer cases, law enforcement began inferring patterns from past cases to catch the current serial killers on the loose.
Scott Bonn, a professor at Drew University and a criminologist, who is in touch with Hazelwood, explained the difference between these two classifications, how law enforcement uses these characteristics to apprehend the killer, and why both types are equally as dangerous. As a criminologist, Bonn studies the patterns of behaviors.