Two unsolved murders became four... The second Dateline Weekend Mystery at 9/8c. | Dateline NBC

The case shifted from a missing person investigation into a homicide... The full story on Dateline tonight at 9/8c. | Dateline NBC

All hell was about to break loose... Watch a classic Dateline (with a twist) tonight at 10/9c on NBC. | Dateline NBC

Friday at 9/8c on an all-new Dateline... | Dateline NBC

It was a plot so sinister, so stunning, it took even seasoned detectives by surprise… Tonight at 9/8c on a classic Dateline Weekend Mystery on NBC. | Dateline NBC

Investigators walked into a mystery that would turn their world upside down… Watch tonight at 9/8c on a 2-hour Dateline Weekend Mystery on NBC. | Dateline NBC