On the night of March 25, 1981, 27-year-old Toni Monette was working an overnight shift she’d agreed to cover at the 7-Eleven on Silver Lake Road in Mounds View, Minnesota. Between a 3:10 a.m. cash register transaction and about 4:30 a.m., she was violently attacked and fatally stabbed multiple times. A customer entering the store discovered her body.

Investigators from the Mounds View Police Department and the Minnesota Bureau of Criminal Apprehension found no evidence that robbery or sexual assault motivated the killing: no money was taken from the register and no sexual assault was reported. Monette was a mother of two young children; the apparent lack of motive deepened the family’s loss and the community’s shock. No arrests have ever been made and the case remains an unsolved homicide.

Anyone who worked in or visited the Silver Lake Road 7-Eleven in March 1981 or who has tips about that night is asked to come forward.