The Murder of Roger Ackroyd is one of Agatha Christie's most famous Hercule Poirot mysteries, renowned for its ingenious twist ending.The story takes place in the quiet village of King's Abbot, where wealthy widow Mrs. Ferrars dies-rumored to have been blackmailed. Soon after, Roger Ackroyd, the man she intended to marry, is found murdered in his study. Retired detective Hercule Poirot, living incognito in the village, is drawn into the case. As he investigates, he uncovers secrets, lies, and hidden motives among the townspeople and Ackroyd's household.The novel is narrated by Dr. James Sheppard, whose calm, precise storytelling builds toward one of Christie's most surprising revelations: the narrator himself is the murderer. The book is celebrated for this bold narrative innovation, which redefined the modern detective genre.