Robert Duncan was 27 when he was last seen in Jacksonville, Florida, on April 27, 1990. Local authorities and search teams investigated his disappearance, but no significant breakthroughs have been reported and the case remains unsolved.

Investigators have followed leads over the years and the case has been reviewed occasionally, but it remains open and unresolved.

Anyone who knew Robert, saw him in Jacksonville around April 27, 1990, or has information that might help should contact the investigators handling his case. What can people who were in Jacksonville then remember that might help explain his disappearance?