On February 14, 2000, Nicholas Nick Kunselman, 15, and his 16-year-old girlfriend Stephanie Hart-Grizzell were found shot to death behind the counter of a Subway restaurant on West Coal Mine Avenue in Littleton, Colorado. Stephanie had been visiting Nick while he finished his closing shift; a coworker who drove by after midnight discovered the lights still on and checked the store, finding the bodies.

Investigators concluded an unknown intruder or intruders committed the double homicide. A witness reported seeing a white male about 16 to 20 years old, with blondish hair and about five feet eight inches tall, leaving the back of the Subway shortly before the discovery. Authorities chased hundreds of leads and even received false confessions; a possible drug-ring link was explored but never proven. A reward now stands at $100,000, and no arrests have been announced.

What information do readers have about the area, the Subway on West Coal Mine Avenue, or anyone who matched that description that night?