The true culprit was identified soon after this HBO documentary came out. A new episode shows that the series was less about who did the killings than about the agony of uncertainty.
At the end of HBO’s “The Yogurt Shop Murders,” an absorbing four-episode documentary about a very cold case — the 1991 killing of four teenage girls in an Austin, Texas, strip mall — Sonora Thomas, the sister of one of the victims, talked about how i... [1502 chars]