It isn't hard to enter the local Barnes and Noble and find a book about a serial killer. It isn't hard to go to the movie theater and see a film based on a serial killer. It isn't hard to turn on the television and find something playing starring a serial killer. Today, killings seem to be a very common theme in popular culture. However, with these industries churning out item after item centered around serial killers each year, the term has almost become a catch phrase for any person who commits a murder. Writers now use the term so casually that it has almost lost its meaning. …