The Murder of Roger Ackroyd by Agatha Christie is one of her most famous detective novels starring Hercule Poirot.

In a quiet English village, wealthy Roger Ackroyd is found murdered soon after learning a secret about a friend’s death. Poirot, who has retired nearby, investigates the case.

The story is told by Dr. Sheppard, Ackroyd’s friend — and in a shocking twist, Poirot reveals that Dr. Sheppard himself is the murderer.