Linda Sue Sherman, 26, disappeared on April 22, 1985, after finishing a night shift at the U.S. Government Records Center in St. Louis. A mother to a nine-year-old daughter, Patty, she had just filed for divorce from husband Don Sherman after a marriage marked by jealousy and abuse. Don reported an argument when she returned that night, said he went to bed, and later claimed Linda left in haste for work the next evening and never returned; her car was found in a short-term parking garage at Lambert International Airport with no record of her boarding a flight.

No action connected the case to human remains until a skull was found outside the Casa Gallardo restaurant in Bridgeton on June 28, 1990. An anonymous flier sent the following year identified the skull as Linda’s; dental records confirmed the match. Investigators named Don Sherman the prime suspect, citing inconsistencies in his accounts and the skull’s discovery near a restaurant he frequented. He denied involvement and later died in 2015 without charges. The rest of Linda’s remains have never been recovered.

What can readers add about Linda’s last known movements, her relationships, or anyone who might have seen her leaving that night?