On February 4, 1979, 16-year-old Tracy Anderson of San Mateo, California, was shot execution-style during a robbery at the Payless Super Drug Store where she worked. Two coworkers were killed alongside her: 23-year-old Michael Olson and 17-year-old William Baumgartner. The attack came as the store was closing during a Dollar Days promotion; the robbers took about $18,000.

Investigators at times pursued an inside-job theory. More than a year after the killings a former Payless employee was arrested, but the case was dismissed at a preliminary hearing for insufficient evidence and the suspect moved to Mexico. Efforts to re-engage that person in later years reportedly proved uncooperative. In 2007 the Governor of California offered a $50,000 reward for information leading to an arrest and conviction.

The murders remain unsolved and the families continue to seek justice. Does anyone have information about the Payless store, the employees who worked there, or that Dollar Days night in San Mateo?