Mary Ann Glasscock, 51, was shot and killed on September 25, 1993, at the Emporium Antiques store in Fort Worth, Texas. Her killing is believed to be connected to the I-70 Killer, an unidentified serial offender who targeted clerks in small specialty stores across several Midwestern states during the early 1990s.

Investigators link her death to a pattern in which the attacker robbed stores and shot the clerks; the I-70 Killer is suspected in six killings in states including Indiana, Missouri, Kansas, and Texas. Mary Ann’s case was covered in national programs but remains unsolved and no arrests have been announced.

Anyone with memories of the Emporium Antiques or information about Mary Ann’s murder is urged to contact the Fort Worth Police Department with tips.