Is this man America's most prolific serial killer? Samuel Little, 79, is a talented artist, and a self-confessed killer. No one knows quite how many people Little has killed, but he claims he's murdered 93 women in all. Earlier this year, the FBI released portraits of women he says he's slaughtered, hoping for help identifying them. Little is currently in prison after being convicted of the killings of three women in California. Little recalls his alleged victims in precise detail, police say.