Dawn Arguello, 46, had served as a volunteer for a nonprofit inmate advocacy group when she fell for spree killer Nikko Jenkins, whom she called an “enigma,” and who is currently on Nebraska's death row.
Samuel Little has confessed to committing 93 murders from 1970 to 2005, of which 50 have been confirmed by the FBI. Watch the serial killer describe some of them in his own, chilling words.