As any reader of murder mysteries can tell you, poison is one of the most enduring - and popular - weapons of choice for a scheming murderer. It can be slipped into a drink, smeared onto the tip of an arrow or the handle of a door, even filtered through the air we breathe. But how exactly do these poisons work to break our bodies down, and what can we learn from the damage they inflict? In a fascinating blend of popular science, medical history, and...