Thailand's Worst Serial Killer is a Woman: The Story of "Am Cyanide"
Thailand's authorities recently closed an investigation on the most notorious serial killer in the country's history: Sararat Rangsiwuthaporn, commonly called "Am Cyanide," poisoned more than 14 people in a murder spree that left local police baffled -- until they learned the full story.
See omnystudio.com/listener for privacy information.