Multiple killings by serial or spree killers and the mass violence seen in war crimes and other atrocities have typically been understood as discrete category types, which can foster the view that there are fundamentally different kinds of human beings, including "deviants" who are born evil and innately given to sadism or a callous lack of empathy. In contrast, this book considers the violence of these "deviants" in terms of larger questions about human violence. Therefore, in addition to describing the life histories of a sample of individual serial and spree murderers, the book includes...