From scorned lovers, attempted murders, to induced paralysis Poisonous Liaisons delves into history's most notorious poisoning crimes, revealing their methods and the short and long-term effects their substances had on victims.

Poison has long been a weapon of choice; in desperate cases of defense, to conquer jealousy, to gain a much-awaited inheritance and of course for revenge in a crime of passion. Through interviews with criminal experts and psychiatrists, Poisonous Liaisons will delve into the thought process of some of history's most notorious criminals, revealing their methods and the short and long-term effects their substances had on victims.