On Valentine’s Day 2000, 16-year-old Stephanie Hart-Grizzell and her 15-year-old boyfriend, Nicholas Kunselman, were found shot to death behind the counter of a Subway sandwich shop in Littleton, Colorado. The couple had been at the restaurant while Nicholas worked the closing shift; an unknown intruder or intruders entered after closing and shot both teenagers. Their bodies were discovered by another Subway employee who noticed lights still on and went inside.

Investigators developed a composite from a witness who saw a man leaving the back of the Subway around the time of the killings. The person of interest was described as a white male, about 16 to 20 years old, medium build, with blondish hair; sketches were circulated and hundreds of leads were generated but produced no arrest. Theories including robbery or links to a local drug scene have been raised but not substantiated. A reward has been offered and the Jefferson County Sheriff’s Office lists the double homicide as an open, active investigation.

If anyone knew Stephanie, Nicholas, or saw someone matching that description near the Subway that night, please come forward with information.