Yogurt Shop Murders: Four Lives Erased in One Night

December 6, 1991. Four teenage girls walk into a yogurt shop in Austin, Texas. By midnight, all four are dead, and the building is on fire. What investigators find in the wreckage is almost nothing — a crime scene deliberately torched to erase every trace of the killer. Almost every trace.

Amy Ayers was 13. Jennifer Harbison and Eliza Thomas were 17. Sarah Harbison was 15. They were employees and friends gathered at the shop on an ordinary Friday night. The crime committed against them was methodical, violent, and calculated in a way that experienced investigators recognized immediately — this was not the work of i...