It was about midnight on December 6, 1991 when firefighters in charge of a two-alarm blaze at the I Can't Believe It's Yogurt shop in the Shoal Creek area in Austin when they made a grisly discovery. They called the cops, and shortly thereafter homicide detectives John Jones and Mike Huckaby entered the still-smoldering rubble. In the back room of the yogurt shop the detectives discovered the bodies of four teenage girls - Jennifer Harbison, 17; her sister Sarah, 15; and Jennifer's classmate Eliza Thomas, 17; and Sarah's friend Amy Ayers, 13. The two older girls had been part-time counterhands at the store and had agreed to give the two younger girls a ride home after their shift was done. The girls had all been tied up together and shot execution style in the backs of their heads with a .22-caliber weapon. Then the criminals set the yogurt shop aflame to cover their tracks, and all of the girls' bodies were badly burned. Eventually suspects were apprehended years later and were found guilty in a court of law, but the suspects' convictions had been unfortunately overturned because of insufficient evidence.