Toxic History! is a narrative medicine lecture series where medical experts tell you stories from the history of poison. Human beings have known about poison – substances that harm and even kill– for thousands of years. Poisons have been seen as mysterious, supernatural, and enigmatic. What are these plants, mixtures, and elements with such powerful properties? It is only in the past century that science has begun to demystify these chemicals and explain how they work. Still, the impact they have on the world – from cultish mass suicides to chemical attacks to a single case of homicide – can be profound. Toxic History! explores the impact on society, culture, and science behind poisonous events in history.