This man may be America's most prolific serial killer. Samuel Little is 79-years-old and locked up behind bars, serving time for three murders he was convicted of.
However, he claims he's murdered 93 women in all. Little has a photographic memory and can still recall extraordinary details from every murder scene and every victim. From jail, he draws portraits from memory of the women he brutally murdered. The FBI and local police are using those portraits to help identify his victims.