A serial killer is typically a person who kills three or more people, with the murders taking place over more than a month and including a significant period of time between them. The United States has by far the largest number of documented serial killers in the world. According to Radford University 's Serial Killer Information Center, it has more documented serial killers than the next ten highest countries on the list combined.
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Identified serial killers [ edit ]. Unidentified serial killers [ edit ]. See also [ edit ]. References [ edit ].
Murdered robbery victim in , and at least three women until in St. Petersburg, Florida. Killed his sister-in-law in Illinois; paroled and moved to Colorado, where he killed two more women.
Poisoned family members with arsenic in Fox Lake, Illinois to receive their inheritance. Sometimes called "The Dating Game Killer" because of his appearance on the television show The Dating Game in the midst of his murder spree.
