werewolf

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marine

on Nov. 6, 2007

A serial killer is someone who murders three or more people in three or more separate events over a period of time for largely psychological gratification. Many serial killers suffer from Antisocial Personality Disorder and usually not psychosis, and thus appear to be quite normal and often even charming, a state of adaptation which Hervey Cleckley calls the "mask of sanity." There is sometimes a sexual element to the murders. The murders may have been completed/attempted in a similar fashion and the victims may have had something in common, for example occupation, race, sex, etc. However, many times the race of the victim is not the same as the perpetrator.

The term serial killer is widely believed to have been coined either by FBI agent Robert Ressler or by Dr. Robert D. Keppel in the 1970s (the credit for the term is disputed). Serial killer entered the popular vernacular in large part due to the well-publicized crimes of Ted Bundy and David Berkowitz in the middle years of that decade.