“It was horrible. Worst thing I've ever seen.” The full story, tonight on an all-new 2-hour Dateline mystery at 9/8c on NBC. | Dateline NBC

Mystery DNA. Two relentless detectives. A shocking takedown. Friday on an all-new Dateline at 9/8c on NBC. | Dateline NBC

An unhappy housewife. A luxury car salesman. A former mortician. A prominent doctor. Could anyone in this twisted tale be trusted? | Dateline NBC

As the morning slipped by, her store remained closed. Where was Amber? Watch an all-new Dateline Friday at 10/9c on NBC. | Dateline NBC

Amy told her friend she had a secret… How could she have known that secret would become the focus of intense investigation for the next 30 years? Tune in for an all-new Dateline tonight at 10/9c. | Dateline NBC

More on John and Lauren's Hidden True Crime podcast | Dateline NBC

On this special edition of Talking Dateline, a Q&A session from our live event in Nashville earlier this fall, we turned the tables on our correspondents and had them answer the questions… Their answers may surprise you. Listen here: https://podcasts.apple.com/us/podcast/talking-dateline-true-crime-true-impact/id1464919521?i=1000739414434 | Dateline NBC