Kathryn Harkup is a chemist, author, and science communicator with a particular interest in the macabre and gruesome aspects of science. Trained as a chemist with a doctorate in inorganic chemistry, Harkup turned her talents to the public engagement of science following her studies. She is known for her unique approach to science communication, often delving into the intersection between literature and science. Harkup is recognized for her book "A is for Arsenic: The Poisons of Agatha Christie," which explores the poisons used in the works of the famous mystery author Agatha Christie from a scientific perspective. The book examines the chemical properties of various poisons and how Christie, who had a background in pharmacy, used this knowledge to create the plots of her novels. With a knack for making complex scientific concepts accessible and entertaining, Harkup has carved out a niche that appeals to both science enthusiasts and literary fans. She continues to write and speak on the fascinating connections between science, history, and culture.