After decades of dead ends, Austin, Texas, police on Friday named deceased serial killer Robert Eugene Brashers as the suspect in the city’s infamous yogurt shop murders. The announcement follows decades without answers in the December 1991 killings of four teenage girls—Amy Ayers, Eliza Thomas, and sisters Sarah and Jennifer Harbison—at the “I Can’t Believe It’s Yogurt!” shop in Austin. The girls, aged 13, 15, and 17, were bound, gagged, and shot, before the shop was set on fire. The breakthrough comes with notable advancements in forensic DNA testing and renewed attention from an HBO docuseries about the case. Not...