Martin Alan Miller was 18 and living in West Hartford, Connecticut, when he disappeared in the spring of 1980. In late May he gave two weeks’ notice at his job at a local McDonald’s, closed his bank accounts withdrawing about $600, and gave a $400 bicycle to a friend. His bedroom was found almost entirely cleared of personal items, including photos and trophies, while his own vehicles — notably a new Porsche valued at about $14,000 at the time — remained at home.

On May 26, 1980, Martin rented a car from Avis; the vehicle was returned on June 4 in Huntsville, Alabama, having accumulated about 1,700 miles. It is not known who returned the rental. Family members say Martin had been troubled for about a year before he left but wouldn’t confide in them or the psychiatrist his parents arranged. He was not reported missing until 1999, and the case remains open.

If anyone knew Martin, saw him in 1980, or has information about the Avis rental’s route or who might have driven it, please share what is known.