1991 Austin yogurt shop murders

The 1991 Austin yogurt shop murders were a quadruple homicide that took place at an I Can't Believe It's Yogurt! shop in Austin, Texas, United States, on December 6, 1991. The victims were four teenage girls: 13-year-old Amy Ayers, 17-year-old Eliza Thomas, 17-year-old Jennifer Harbison and Jennifer's 15-year-old sister, Sarah. Jennifer and Eliza were employees of the shop, while Sarah and her friend Amy were in the shop to get a ride home with Jennifer when it closed at 11:00 p.m.

About one hour before closing time, a man was permitted to use the public restroom in the back. He waited there and may have jammed a rear door open. A couple who left the shop just before closing time reported seeing two men at a table acting furtively. Around midnight, a patrolman reported a fire in the shop, and first responders discovered the bodies of the girls inside. The victims had been shot in the head; at least one of them had been raped. A .22 firearm and a .380 pistol were used to commit the murders, and the perpetrator likely exited through a back door that was found unlocked.

The organized method of operation, ability to control the victims and destruction of evidence by arson pointed to adults experienced in crime rather than teenagers, according to one of the original detectives on the case. The Austin Police Department (APD) collected DNA from a male suspect as a result of one of the rapes. In 2025, the APD matched the DNA to serial killer Robert Eugene Brashers.