Roger Ackroyd is murdered hours after learning a secret that could destroy someone close to him — and the list of suspects includes nearly everyone in his household and his social circle. Hercule Poirot, newly retired to the village to grow marrows, gets pulled back into detective work by a case that turns out to be one of the most audaciously constructed mysteries ever written.The novel that made Christie's reputation as a master of the form — its final twist is still taught in mystery-writing courses as one of the boldest tricks the genre has ever pulled, and reading it once means you can never read it the same way again.