Dr. Joyce Hendricks is hoogleraar psychiatrie aan de Harvard School of Medicine. Ze is gespecialiseerd in de studie van gewelddadige individuen, met name seriemoordenaars. Zij en haar collega hebben hun werk gedocumenteerd. Dit is hun eerste dag in Huntsville, Texas, waar ze Bobby ontmoeten.

Dr. Joyce Hendricks is a professor of psychiatry at the Harvard school of medicine. She specializes in the study of violent individuals, specifically serial killers. She and her colleague have been documenting their work. This is their first day in Huntsville, Texas where they meet Bobby.