One victim was found 2 miles from where her friend and the car were located.
The only description was the man who attacked couple on "lover's lane" was that he was about 6 feet tall and wore a pillowcase with eye holes.
One piece of evidence that remains is a full palm print.
The Town That Dreaded Sundown was filmed in 1976 but is not fully accurate.
Spring Lake Park and a Texarkana, Arkansas home were the sites of the murders.