PREVIEW: Do No Harm

NBC Nightly News and Dateline anchor Lester Holt reports on one of the most egregious Medicare fraud cases in U.S. history. In a joint interview, victims of Michigan oncologist Farid Fata’s horrific crimes and the family members of patients who died while under his care share their unfathomable stories of misdiagnosis and overtreatment, together. Airs Sunday, July 17 at 7/6c.