Sen. Tina Smith (D-Minn.) confronts Sen. Mike Lee (R-Utah) about his inflammatory social media posts following the shootings ...

Dateline covered a case from August 2003, involving a 22-year-old New Mexico State University graduate student named Katie Sepich who was killed in Las Cruces, New Mexico.

NBC Dateline's recent episode, titled Deadly Obsession, was a harrowing case that spanned more than two decades.

In today's edition of Diddy on Trial, the hip-hip artist known as Ye makes a brief cameo while the U.S. government continues ...