Dark Winds season 3's reveal that Dr. Reynolds was Ernesto Cata's murder was unexpected, but it actually helped support the overarching themes of the season. The catalyzing mystery ofDark Winds season 3 is who murdered Ernesto Cata and why. For most of the season, Dark Winds' narrative and context clues led the audience to believe that the person who murdered Ernesto Cata out in the desert was likely Tom Spenser's fixer-slash-assassin Budge de Baca, or perhaps even Halsey, the drug-smuggling farmer.