1x7 - Most Evil

Is there a recipe for creating a serial killer? An explanation for why someone would commit such heinous acts? Science has long avoided the concept of evil – until now. Researchers are unlocking the mysteries of violence, by probing the forces of nature and nurture. Using shocking examples of brutal crime, "The Science of Murder" explores whether killers are forged in abusive homes, or if some people are actually wired to be cold-blooded. In their examination of the most violent killers, these scientists confront a controversial question: could any of us be capable of evil?