A killer was on the loose… The full story tonight at 9/8c on a Dateline Weekend Mystery on NBC. | Dateline NBC

This week on a new Dateline: True Crime Weekly, we’ve got updates on the accused Gilgo Beach serial killer, the Florida grandmother accused of helping plan a murder, and a homicide investigation in the desert. Listen now: https://podcasts.apple.com/us/podcast/the-family-matriarchs-defense-a-landmark-decision/id1745566056?i=1000724861749 | Dateline NBC

Thirty-two years ago this month, a series of murders began near and along Virginia’s Colonial Parkway. When it was over, four couples were dead at the hand of what authorities believe could be a serial killer. The crimes were dubbed “The Colonial Parkway Murders.” | Dateline NBC

Friends thought something seemed off with Lauren... Dateline update tonight at 10/9c. | Dateline NBC

Since we first aired this story, quite a bit has changed. But, we'll let Josh Mankiewicz tell you about it tonight on a Dateline update at 10/9c. | Dateline NBC

Tonight on a Dateline Weekend Mystery at 9/8c... | Dateline NBC

It was the smoking gun they needed to solve Linda’s murder… Tune in Friday at 9/8c for the full story on an all-new Dateline mystery. | Dateline NBC