Poisoning occurs in over half of Agatha Christie's many novels and stories. In fact, she used a larger number and broader selection of poisons and medicines, for a wider variety of purposes, with greater frequency, ingenuity, and scientific accuracy than any other detective fiction writer. Yet very little has been written on the use of drugs, poisons, and chemicals in Christie's fiction.

The Poisonous Pen of Agatha Christie entertainingly and authoritatively fills this gap. Michael Gerald explores the use of poisons and drugs in Christie's fiction not only to commit...