Dateline Episode Trailer: The Betrayal of Sarah Stern

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The discovery of a nineteen-year-old’s car abandoned on a bridge in New Jersey turns into a missing person case that evolves into a months-long homicide investigation. As the case tears apart a Jersey Shore town, police discover a plot involving money, close friends and a fatal betrayal. Keith Morrison reports on the investigation and the extraordinary undercover video that helped solve the crimes. Airs Friday, May 17 at 9/8c on NBC.