Stephania Andrews, 62, vanished from downtown Chicago after leaving a hotel cocktail party with her husband Edward on the night of May 15, 1970. The couple drove away from the Sheraton-Chicago in a 1969 yellow and black Oldsmobile coupe; the garage manager later said Edward was staggering, the car struck a door leaving the garage, and Stephania was crying in the passenger seat. Witnesses last saw the car driving north in the southbound lanes on Lower Michigan Avenue.

Neither Stephania, a credit investigator, nor Edward, a manufacturing company manager, reported to work the following Monday. Officers found their Arlington Heights home orderly with newspapers and mail collecting outside and no signs of packing, struggle, or foul play. Investigators theorized the car may have gone into the Chicago River after scraping concrete and leaving skid marks on a bridge on Lower Wacker Drive. Extensive searches of the river and Lake Michigan with divers, sonar, and dragging equipment failed to recover the Oldsmobile. No activity was ever recorded on the couple’s bank or credit accounts afterward.

The disappearance remains unexplained and other tips about possible foul play led to additional searches that produced no answers. If anyone knew the Andrews, saw their car that night, or has information about the vehicle’s possible route, please share what is known.