The Colonial Parkway Killer

Between 1986 and 1989, the Colonial Parkway thoroughfare in Virginia served as a suspected serial killer’s hunting grounds. The killer or killers responsible for the Colonial Parkway murders targeted couples as they sat in their vehicles, each incident taking two lives at a time. Six people are confirmed dead and another couple remains missing and presumed killed.
SOURCES
Predators on the Parkway: A Former Homicide Detective Explores the Colonial Parkway Murders (Spingola Files Book 2); by Steven Spingola
https://www.wtkr.com/2010/04/15/new-suspect-in-the-colonial-parkway-murders-a-shock-to-victims-families/
https://www.pilotonline.com/news/crime/article_a7918d4c-8305-54e2-a645-5da3ce8e2f6c.html
https://www.wtkr.com/2010/06/15/retired-detective-delivers-report-to-families-of-colonial-parkway-murder-victims/
https://fredericksburg.com/news/crime_courts/after-20-years-shenandoah-national-park-double-murder-still-unsolved-but-the-fbi-says-the/article_c161cfe5-156e-50e7-8b76-0761f186ae79.html