Quote:
Originally Posted by sicone
it only takes 5 murders to be a serial killer these days? Todays standards are so low.
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* A serial killer is someone who commits three or more murders over an extended period of time with cooling-off periods in between. In between their crimes, they appear to be quite normal, a state which Hervey Cleckley and Robert Hare call the "mask of sanity." There is often ? but not always ? a sexual element to the murders. All the murders must be completed/attempted in a similar fashion or the victims must have something in common, ex. occupation, race, sex, etc.
* A mass murderer, on the other hand, is an individual who commits multiple murders in a single event and in one location. The perpetrators sometimes commit suicide, therefore knowledge of their state of mind and triggers their actions is often left to speculation.
* A spree killer commits multiple murders in different locations over a period of time that may vary from a few hours to several days. Unlike serial killers, however, the spree killer does not take a long break or resume everyday life between killings.
wikipedia is the shit
http://en.wikipedia.org/wiki/Serial_killer