In the pre-dawn hours of November 24, 1974, 17-year-old David Michael Longfellow was shot and killed while parked with his girlfriend on a dead-end stretch of Hermit Road, a lovers’ lane overlooking Massabesic Lake in Manchester, New Hampshire. A red convertible passed, turned around, and when it went by again three shotgun blasts—deer slugs—hit the driver’s side, striking David in the neck and shoulder; his companion was not physically hurt but witnessed the shooting. David, a senior at Manchester Central High School who worked at his father’s gas and service station, died in his car.

Manchester and New Hampshire State Police conducted an intensive investigation: the Hermit Road scene was searched, divers searched the lake, and investigators interviewed over 900 people and examined more than 100 vehicles. The suspected 12-gauge shotgun was never recovered; numerous polygraph tests were given and a false confession was obtained, but no one has been charged. The case remains the oldest unsolved homicide listed by the Manchester Police Department and is open with the New Hampshire Department of Justice Cold Case Unit.

If anyone knew about a red convertible in that area on November 24, 1974, or has information that could help finally solve David Longfellow’s murder, please come forward.