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

The security footage wasn't perfect, but it helped police develop a timeline to track a killer... More tonight at 9/8c on an all-new 2-hour Dateline mystery. | Dateline NBC

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

It’s the beginning of a mystery where nothing would be what it seemed... The full story tonight at 9/8c on a classic Dateline. | Dateline NBC

88K views · 823 reactions | You’re witnessing something highly unusual… Watch the full story tonight at 9/8c on a classic 2-hour Dateline. | Dateline NBC | Facebook

102K views · 562 reactions | It was the last moment of pure innocence any of them would ever know... The full story on a classic Dateline tonight at 9/8c. | Dateline NBC | Facebook

15K views · 75 reactions | Finally, the last mystery in the case began to unravel… Dateline new tonight at 9/8c on NBC | Dateline NBC | Facebook

12K views · 302 reactions | “Investigations like this consume you...” Watch Friday at 9/8c on an all-new 2-hour Dateline mystery on NBC. | Dateline NBC | Facebook

It was a heartbreaking discovery... Tune in Friday at 9/8c for an all-new 2-hour Dateline mystery. | Dateline NBC