It was a case that touched generations of investigators, who refused to quit until the killer was found… And we'll tell you all about it on a Dateline Weekend Mystery tonight at 9/8c. | Dateline NBC

A killer was on the loose… The full story tonight at 9/8c on a 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

A triggered alarm, a cryptic 911 call, and a massive police presence… What could have happened on Birch View Drive? Find out tonight at 9/8c on a classic 2-hour Dateline mystery. | Dateline NBC