"Dateline" is airing a new episode about the killing of Emma Walker. Here's everything you need to know to watch, live or later on, if you missed it.

As Luigi Mangione faces an upcoming criminal trial as the prime suspect in the murder of United Healthcare CEO’s Brian Thompson, a clear motive has yet to emerge as to why the University of ...

Josh Mankiewicz reports Saturday, January 31 at 9/8c on NBC.Jan. 26, 2026 A Postcard from the Field: Chaloner & Co. © 2026 NBCUniversal Media, LLC ...