June 1, 2011 6:18 pm 12-Year-Old's Murder Mystery A 12 year-old girl was found dead inside her Gaithersburg, Md., town house, but details about what happened haven’t come out. Local 2:03 PNC Parkway Classic marks 40 years of racing in Virginia 0:40 Man stabbed to death near Audi Field in DC 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner 0:43 American University locked down before man arrested on campus 3:08 Family holds memorial for brothers, 3 and 6, who died after Clifton house fire