Robert G. Marvin, a 55-year-old geologist from Moab, Utah, was last seen on September 4, 1984, telling his girlfriend he planned to visit Colorado to look at condominiums in Durango and Telluride. He often traveled between Moab and Albuquerque for work and was reported missing two days later when his employer, Santa Fe Mining, called his home and could not reach him.

Weeks after Marvin vanished, his orange and white 1974 Volkswagen convertible was found abandoned at the Albuquerque airport. Personal items were inside, including a tobacco pouch that contained traces of blood, though there wasn’t enough to determine whether the blood was his. Marvin hadn’t withdrawn money from his accounts, and his last paycheck went uncashed, which investigators flagged as suspicious; foul play is suspected.

The disappearance is further shadowed by the unsolved 1979 murder of Marvin’s wife, Lola, who was shot to death at the Albuquerque airport while Marvin was on a business trip in Canada. Neither Lola’s murder nor Robert’s disappearance has been resolved and both cases remain cold.

Did anyone in the Durango or Telluride area remember seeing Marvin in early September 1984, or have information about the Volkswagen found at the Albuquerque airport?