A serial killer is defined as an individual who has killed three or more people over a period of time longer than a month.Most murders are based his psychological way.Usually abused as children are.
The average IQ of 113
Most follow their crimes in the news.
reasons:
visionary
Suffering psychotic breaks with reality.
their mission
"Free the World" of people who they think do not belong.
Deaths by emotion or pleasure
Power / Control
Gain power over the victim