also no evidence. but police found a dark side behind that bright suburban facade. she slept with the children and the door locked. and finally a vital clue. what happened to nancy the day she disappeared? welcome to dateline. a young mother disappeared one her husband said she went for a run and never came home. the puzzling case happened in a safe, suburban neighborhood where crime is unexpected. but sometimes there are secrets hidden behind closed. it all seemed like such a bad . it. . at reporter: it was a saturday morning in july. the happy little world suburb of raleigh, north carolina, called cary, a place where a young family would aspire to if you were someone like hanna pritchard, for example. there s always lots of friend making going on through someone you meet. lots of cookouts and family functions. reporter: like the one in the neighborhood the night before. so hanna would have heard party stories that saturday morning from her friend nancy co
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