ABSTRACT
This chapter establishes Killer Data as a review of all known events of serial murder in the United States over the 10-year period spanning 2011–2021, details the parameters used in data collection for the review, and discusses the subsequent findings. The average serial murderer is an African American male, without a criminal record, who began killing locally, whose series began and ended in early adulthood, after the use of a firearm in the killing of two to three victims out of anger. The average serial murderer selected both adult male and female victims, aged 21–30 years old, from a mixture of races and sometimes shared a cursory relationship with their victims.
