Dale Duane Williams, 42, vanished from Nucla, Colorado, on May 27, 1999. That afternoon he left his auto body shop, Dale’s Pro Body Shop, in a white 1994 Ford F-150 after a phone call from an unidentified woman who said she was stranded near Bedrock; he was last seen about 12:15 p.m. When he did not return for dinner his wife, Diana, reported him missing the next morning.

On July 4, 1999, Williams’s pickup was found submerged where the San Miguel and Dolores Rivers meet. The truck was in gear with the ignition on, and investigators found no sign of Williams. A .22-caliber rifle recovered from the truck bed was traced to a former family friend, James Daniel Bishop. Posters placed by Williams’s wife were repeatedly torn down at the local post office; a hidden police camera recorded the person removing them and investigators identified the same man, Dan Bishop, who denied involvement and gave an alibi.

The case went cold for years, and Williams’s remains have never been found. Does anyone who knew Dale or his movements on May 27, 1999, have information that could help clarify what happened that day?