The 1991 Austin yogurt shop murders is an unsolved multiple homicide case in Austin, Texas. On Friday, December 6, 1991, four teenage girls: 13-year-old Amy Ayers (or Ayres), 17-year-old Eliza Thomas, 17-year-old Jennifer Harbison and her 15-year-old sister, Sarah, were murdered. Jennifer and Eliza were employees of the store while Sarah and her friend Amy were in the shop to get a ride home with Jennifer after it closed at 10pm. In the last half hour a man who was trying to hustle customers in front of him and asked one if he was a cop, was permitted to use the toilet in back taking a very long time and may have jammed a rear door open. A couple who left the shop just before 10pm, when Jennifer locked the front door to prevent more customers entering, reported seeing two men at a table acting furtively.