In October 1981, a 30-year-old single mother living in Carmel, California, was brutally murdered in her own home. She was found strangled to death, and the case shocked the quiet, upscale community of Carmel. For many years, there were few leads, and the case went cold. But in 2020, thanks to advancements in DNA technology, investigators were able to link DNA from the scene to a promising suspect.