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    Dennis Murphy Previews: Down the Back Staircase


    In a new, two-hour Dateline, Dennis Murphy sits down with Michael Peterson in his first network television interview since his release from prison in 2011. Peterson was originally convicted in 2003 of first degree murder after his wife Kathleen was found dead at the bottom of their staircase. The trial made national headlines, and Murphy has reported on this case for more than a decade. Airs Friday April 7 at 9/8c.