Clever Criminal or Cannibal?

Christopher McCuin murdered his girlfriend then called the police to confess. When authorities arrived he was cooking one of the victim’s ears and flesh from the victim was found raw on a plate nearby. Investigators have found no evidence he actual ate any of the victim and are looking into the possibility that this was a staged scene McCuin thought would help him avoid the death penalty:

As serial killers and criminal psychology become more and more a part of the mainstream entertainment culture, are we seeing the birth of a clever new criminal who has just enough knowledge to create the illusion of insanity and thus escape being held accountable for their crimes?