Thai woman Sararat Rangsiwuthaporn received a death sentence for poisoning friend Siriporn Khanwong in 2022, the first of 14 alleged cyanide murders since 2015. Sararat, an online gambling addict, borrowed money from victims before poisoning them, linked to 15 cases with one survivor. Facing charges for 13 additional murders, her crimes are among Thailand’s most shocking in scale and brutality.