“Failing to define the target population leads to difficulties in generalizing research findings and the ability of researchers to make definitive statements about the serial killer population” — Culhane et al., J Police Crim Psych Welcome. I invite you to review the research below as I attempt to address the quoted issue. Using Data to Study Serial Killers How Similar or Different are Potential and Successful Serial Killers? Why Has Serial Killing Declined? How Similar are Spree and Serial Killers? A Study of the Time Span Between Serial Killings Advances in Offender Profiling Body Count: a Faulty Measurement of Deadliness Are Serial Killers Responsible for Preventable Deaths? Why is There So Much Animosity Among Those That Hunt Serial Killers? Dictionary of Criminology Entry on Serial Murder