How did an ordinary Friday evening at a yogurt shop in Austin, Texas circa 1991 turn into a nightmare for four teenage girls?

Over 30 years ago, 15-year-old Sarah Harbison, 13-year old Amy Ayers, 17-year-old Jennifer Harbison, and Eliza Thomas were brutally murdered at "I Can't Believe It's Yogurt!"

Who murdered these girls and why? Was there more than one killer involved? Why were these four girls a target of a heinous murder?

If you have any information related to the case, please contact the Austin Police Department Homicide tip line at 512-477-3588 or Crime Stoppers at 512-472-TIPS ...