On December 6, 1991, Jennifer Harbison and Eliza Thomas, both 17, were scrubbing down counters and sweeping the floors at a yogurt shop in Austin, Texas, anticipating going home and having a sleepover.\xa0 Jennifer\u2019s 15-year-old sister , Sarah, and her 13-year-old friend, Amy Ayers, were sitting at one of the tables in the shop, waiting [\u2026]