In 1996, 19-year-old Cal Poly student Kristin Smart went missing after attending a college party over Memorial Day weekend. Although she did not seem drunk to partygoers, students found her passed out in a neighboring lawn. Paul Flores volunteered to walk Kristin home and was the last person to see her. Flores became a person of interest in the investigation into Kristin's disappearance and would later become the prime suspect in her murder.

Retired San Luis Obispo County Sheriff's Detective Clint Cole became the lead investigator in Kristin's case in 2019. He discusses the evolution of the case, and how he was eventually able to bring answers to the decades-old mystery.

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