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A serial killer is typically a person who murders three or more people, with the murders taking place over more than a month and including a significant period of time between them.[1][2] The US Federal Bureau of Investigation (FBI) defines serial killing as "a series of two or more murders, committed as separate events, usually, but not always, by one offender acting alone".[2][3]
- ^ Ronald M. Holmes; Stephen T. Holmes (1998). Contemporary Perspectives on Serial Murder. SAGE Publications. p. 1. ISBN 0-7619-1421-8. Retrieved 15 June 2016.
Serial murder is the killing of three or more people over a period of more than 30 days, with a significant cooling-off period between the murders [...] The baseline number of three victims appears to be most common among those who are the academic authorities in the field. The time frame also appears to be an agreed-upon component of the definition.
- ^ a b Burkhalter Chmelir 2003, p. 1.
- ^ Morton 2005, p. 4, 9.