Set in the bucolic English village of King’s Abbot, the novel is narrated by Dr. James Sheppard, physician to the area’s leading residents, one of whom is Roger Ackroyd, a wealthy industrialist. Sheppard is a bachelor who lives with his sister Caroline, an elderly spinster with a bent for gossip. Ackroyd, a widower, lives with his widowed sister-in-law, the penurious yet proud Mrs. Cecil Ackroyd. Her daughter Flora is engaged to marry Ralph Paton, Ackroyd’s penniless and irresponsible stepson.
Shattering the usual calm are two deaths, seemingly connected only by proximity of time and place, but in fact directly related. First, Mrs. Ferrars, a wealthy widow, dies, presumably of an accidental overdose of veronal. (Her husband had died a year earlier, seemingly of acute gastritis complicated by alcoholism, though Caroline Sheppard thinks his wife poisoned him.) Roger Ackroyd is murdered the next night, stabbed in his study soon after Dr. Sheppard visited with him. The two men were friends, and during their last visit, Ackroyd told Sheppard that he and Mrs. Ferrars had planned to marry, but the previous day she confessed to having poisoned “her brute of a husband” a year earlier. What is more, someone knew of the crime and was blackmailing her. Ackroyd blamed himself for her suicide because he reacted to her revelation with repulsion and horror, instead of with sympathy, but he was “not the type of a great lover who can forgive all for love’s sake.... All that was sound and wholesome and law abiding in him must have turned from her utterly in that moment....” She asked Ackroyd for twenty-four hours before he reported her crime, and during this period she committed suicide. While he was telling Sheppard the tale, the butler brought in the evening mail, which included a letter from Mrs. Ferrars, presumably identifying her blackmailer. Ackroyd set it aside to read after Sheppard left. When the police search the room after Ackroyd’s death, the letter is gone.
In the aftermath of the murder, a newcomer to the village enters the picture. The Larches, a house next to that of the Sheppards, has been rented by an elderly foreigner, thought to be a retired hairdresser but actually Hercule Poirot, the Belgian private investigator, who knew Ackroyd and hoped to retire anonymously to King’s Abbot and cultivate vegetable marrows. Poirot, however, agrees to take on the case at the behest of Flora Ackroyd and works with the police in attempting to solve the mystery.
Poirot’s sleuthing determines that several people in the Ackroyd household stood to benefit from the man’s death: his sister-in-law; his niece; Geoffrey Raymond, his secretary; Elizabeth Russell, his housekeeper; Parker, the butler; and Ursula Bourne, the parlormaid. Mrs. Ackroyd and Flora had been totally dependent upon Ackroyd for financial support, which the man—wealthy though he was—provided grudgingly; therefore, an inheritance would lift a burden from each. Raymond is badly...
(The entire section is 1,417 words.)