He's the most notorious murderer you've probably never heard of. Edward Rulloff terrified the nation in the mid-19th century for his wickedness and his brilliance. His oversized brain was so fascinating that it still sits in a dusty jar at Cornell University. Crime historian Kate Winkler Dawson has written a new book about Rulloff called All That is Wicked. She shares his story and its implications for the then-emerging field of criminal psychology. The Rulloff case still raises the essential question: Are psychopathic killers born or made?
