Numerous research and theory have been published in an effort to better understand and categorize the most aberrant of pathological behaviors, those of a serial killer. This research is not only used to understand these individuals and what causes them to act out in this manner, but is also applicable when thinking about prevention and early detection of such behavior. When one can accurately understand patterns of behaviors, and the characteristics of such patterns, one can then begin to understand and trace back psychological mechanisms and etiologies of such behavior. Understanding and identifying precursors to these behavioral patterns will aid in early detection and intervention. A considerable amount of this research has focused on solo serial killers specifically, or serial killers as an entire population. Very little research is available regarding differences between different categories of killers, such as solo and team types of serial killers. The current research aimed to increase specificity of the available research and examine whether there are key differences in various aspects of criminal behavior between solo and team serial killers.