police say he killed 45 year old robert mc kenna and his girlfriend helped cover up the crime. mc kenna was found dead at his home last month and involved with big game hunting and diamond running in africa. investigators believe robbery may have been a motive. >>> authorities in new hampshire are investigating an alleged hit list. a book called death notes was discovered at gnashwa high school with the names of students inside. the principal says the student was removed from class and disciplinary action has been taken and no time were students or faculty in danger. >>> tonight is a big night for democrats. turning over to campaign 2016, the party's presidentable hopefuls will take on the bright lights of las vegas. craig boswell has a preview from washington. >> reporter: hilary clinton arrived in las vegas monday and started taking shots at republicans. is entertaining. you are don't think it's entertaining when somebody insults immigrants and women. >> reporter: the first time her opponents will get to swear off to face. >>> it's a wonderful idea. both parties having debate