For 30 years, April Tinsley's killer remained unidentified. Then preserved DNA, genetic genealogy, and an old trail of taunting notes brought investigators to a suspect in Fort Wayne. Tinsley was found dead in Indiana in 1988, but early investigative efforts could not identify the person responsible. The evidence was stored, the case went cold, and the killer appeared to have disappeared into ordinary life. In 2018, genetic genealogy helped narrow the search to John Miller. The investigation also revisited the notes and tips that had once seemed impossible to connect, creating a breakthrough decades after the murder. If you enjoy cold cases solved through patient evidence work and modern DNA techniques, this case is worth watching.

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