Forensic Files Penchant for Poison - Full Episode

In San Angelo, Texas, the poisoning of Lita and Olgie Nobles with arsenic reveals a pattern of serial murders [citation:1][citation:7]. As Lita survives a lethal dose, investigators connect her husband's death to the suspicious passing of the wealthy Norton sisters [citation:7][citation:10]. The case becomes a race for evidence when the sisters' remains are cremated, leading forensic scientists to develop a groundbreaking new method to detect poison in ashes [citation:7]. A chilling story of a killer who believed he had committed the perfect crime [citation:10].