Fourteen novels. Fourteen poisons. Just because it's fiction doesn't mean it's all made-up . . . Agatha Christie reveled in the use of poison to kill off unfortunate victims in her books; indeed, she employed it more than any other murder method, with the poison itself often being a central part of the novel. Her choice of deadly substances was far from random--the characteristics of each often provide vital clues to the discovery of the murderer...