Fort Worth, Texas, investigators desperately search for answers after a 17-year-old high school student is kidnapped and murdered following a Valentine’s Day dance. Josh Mankiewicz reports.

In Dateline’s “After the Verdict series” Josh Mankiewicz talks with Jim Walker, Carla Walker’s brother, about his new mission to lobby for the Carla Walker Act, which would make funding available to police departments around the country for the same cutting-edge DNA tools used to solve his sister's case decades later. “After the Verdict” is available exclusively to Dateline Premium subscribers: https://dateline.supportingcast.fm/listen/dateline-nbc-premium/after-the-dance

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