https://www.crimewatchpa.com/crimes...-marie-pierson-unknown-suspects-–-marcus-hook
On July 9, 1984, Denise Marie Piersons remains were found in the vicinity of the railroad tracks located at 7[SUP]th[/SUP] and Market Streets, Marcus Hook, Delaware County. It is believed Denise Marie Pierson was transported to this location after she was murdered. Denise Pierson was 18 years old when she was murdered. Denise last resided on White Avenue, Linwood, PA.