How to get inside the mind of a serial killer

Based on the wild popularity of shows like Dexter and CSI, it would seem our fascination with the ultra-creepy criminals called serial killers knows no bounds. But why do these unusual murderers exist? And how can insights into their behavior be used against them? Here's what you need to know about the mind of a… » 10/24/12 9:52am 10/24/12 9:52am