Charles Franklin Hoekstra, 43, vanished after leaving home in Rowlett, Texas, for work on December 9, 1993. He was employed as a structural engineer at the Superconducting Super Collider and never arrived at the site. His red 1986 GMC Jimmy was found the following day abandoned on a service road off Interstate 20 in Dallas, but there has been no trace of Hoekstra himself.

At the time he was last seen he wore a white dress shirt, jeans, a denim jacket, white Reebok sneakers, a gold watch and a wedding band. He used eyeglasses or contact lenses and had several scars on his abdomen, back and ankles. Foul play is suspected because of the unexplained circumstances and the lack of any contact after his disappearance.

The case remains open with investigations by the Rowlett Police Department and outreach by missing persons organizations but no substantial leads have been reported. Does anyone who lived near Rowlett or Interstate 20 in December 1993 remember seeing Hoekstra, his vehicle, or anything unusual that morning?