Dateline NBC

The suspicious death of Sarah Hartsfield’s fifth husband leads investigators to a past filled with failed romances and wild allegations. Keith Morrison reports.

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An arrest in the Ohio double murder has made headlines. Surgeon Michael David McKee is accused of killing his ex-wife, Monique Tepe, and her new husband, Spencer. In Virginia, former IRS agent Brendan Banfield is on trial for allegedly murdering his wife and a stranger. His former lover -- the family au pair -- testifies against him. Plus, a trial date has been set for alleged Gilgo Beach serial killer Rex Heuermann. And an expert gives us the lowdown on 911 calls. Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com

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When a woman attempts to connect with old neighborhood friends on Facebook, she has no idea it will dredge up a shocking, long buried truth. Keith Morrison reports.

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Lead detectives and family members speak to Dateline about the case of teenager Michelle Carter, who was convicted of bullying her boyfriend to kill himself. Andrea Canning reports. 

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In Ohio, police share security camera video of a person of interest in the shooting deaths of a dentist and his wife. In Georgia, a widow accused of killing her husband stands trial for the third time. In Los Angeles, an update in the Nick Reiner case.  Plus, an arson investigator on what tools he uses to solve a crime. Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com

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