The well-tended worlds of five women in Washington, D.C., are charted in this entry in the sudsy "Real Housewives" franchise. First up: Michaele Salahi---famed for crashing a White House state dinner in November 2009---throws a polo event, but modeling-agency proprietress Lynda Erkiletian brushes off the function. Meanwhile, Mary Schmidt Amons preps for her birthday party; and Stacie Scott Turner presides over a dinner party.