In what is considered to be one of her most controversial mysteries, Agatha Christie breaks all the rules of traditional mystery writing. The eminent Belgian detective Hercule Poirot has lost a friend to an unfortunate stabbing incident, and now, despite his retirement in a previously peaceful English village, he must return to work and find out who killed Roger Ackroyd and how his demise may be connected to the dark secrets and tragic events surrounding Ackroyd's late fiancee, who died only th ...