“The Yogurt Shop Murders” comes out at 10 p.m. ET tonight, Aug. 3, on HBO. The episode will release at the same time on HBO’s HBO Max streaming service. “The Yogurt Shop Murders” is a four-part documentary series, with the episodes airing over the next four weeks.

When filmmaker Margaret Brown decided to direct The Yogurt Shop Murders, she initially worried that making a film about it would cause her to confront an open wound.