The missing persons case had just taken a tragic turn... More tonight on a Dateline Weekend Mystery at 9/8c. | Dateline NBC

Two murders. Three Trials. One killer. Watch it all unfold tonight at 9/8c on an ALL-NEW Dateline mystery… | 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

“I knew she was going to be famous and I would see her on TV.” She was right... An all-new Dateline Monday at 10/9c. | Dateline NBC

911 operators are used to dealing with life and death emergencies, but this was different... More on a classic Dateline at 10/9c tonight. | Dateline NBC

In the summer of 2010, things in the Kyne house were tense... Find out what happened tonight at 10/9c on a classic Dateline. | 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

More on John and Lauren's Hidden True Crime podcast | Dateline NBC