Agatha Christie's 'The Murder of Roger Ackroyd' was published in 1926. William Collins, Sons released the novel in the United Kingdom in June of that year, and an American edition followed later in 1926.
The book is the third Christie novel featuring Hercule Poirot as its lead detective. It is set in an English village and begins after the death of wealthy Roger Ackroyd. Local doctor James Sheppard narrates the investigation, while Poirot comes out of retirement to uncover the truth. The novel's controversial narrative technique and startling solution made it one of the most discussed books in detective fiction.
Before appearing as a book, the story was serialised in the London Evening News from July to September 1925 under the title 'Who Killed Ackroyd?' Christie had already published novels, but this book greatly strengthened her reputation. It is often confused with later Poirot works such as 'The Big Four', which followed it in 1927.