April 11, 2011 9:18 pm Cold Case: Carolyn Anne Rietzler Almost 38 years ago, Carolyn Anne Rietzler was killed in Prince George’s County, Md., the night after Thanksgiving. Her family still has no answers. Local 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 2:05 ‘People immediately hit the ground': 6 hurt in shooting outside DC nightclub