DATELINE FRIDAY SNEAK PEEK: UNTHINKABLE: The Menendez Murders

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The Menendez brothers were convicted more than two decades ago of murdering their parents in Beverly Hills. Friday’s broadcast features a comprehensive look at the Menendez case, including interviews with Lyle Menendez, former detective Les Zoeller, former prosecutor Pamela Bozanich and more. Keith Morrison reports. Keith Morrison reports Friday November 17 at 9/8c on NBC.