The Pale Horse
Why this book?
Those who think of Agatha Christie as a “soft” crime writer need to look at her books again. She qualified as a pharmacist during WWI, and she made good use of her knowledge of poisons in her novels. Cyanide was her most often used poison choice, but I like The Pale Horse because it’s one of the rare—and accurate—appearances of thallium in a mystery novel. Christie’s writing made my discoveries about North Carolina’s serial female serial poisoners even more intriguing.