<P> A serial killer is typically a person who murders three or more people , usually in service of abnormal psychological gratification , with the murders taking place over more than a month and including a significant period of time between them . Different authorities apply different criteria when designating serial killers ; while most set a threshold of three murders , others extend it to four or lessen it to two . The Federal Bureau of Investigation ( FBI ) , for example , defines serial killing as `` a series of two or more murders , committed as separate events , usually , but not always , by one offender acting alone '' . </P>
<P> A serial killer is typically a person who murders three or more people , usually in service of abnormal psychological gratification , with the murders taking place over more than a month and including a significant period of time between them . Different authorities apply different criteria when designating serial killers ; while most set a threshold of three murders , others extend it to four or lessen it to two . The Federal Bureau of Investigation ( FBI ) , for example , defines serial killing as `` a series of two or more murders , committed as separate events , usually , but not always , by one offender acting alone '' . </P>
when are you classified as a serial killer
when are you classified as a serial killer
a person who murders three or more people , usually in service of abnormal psychological gratification , with the murders taking place over more than a month and including a significant period of time between them
a person who murders three or more people , usually in service of abnormal psychological gratification , with the murders taking place over more than a month and including a significant period of time between them