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

An extraordinary journey through the criminal justice system was just beginning... The full story tonight at 9/8c on a Dateline Weekend Mystery. | 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

Five years ago this month, the search for Skylar Neese was intensifying. Take a look back at the case in this week's Dateline Crime Capsule. | Dateline NBC