In the quiet village of King's Abbot, a widow's suicide has stirred suspicion and dreadful gossip. There are rumors she murdered her first husband, that she was being blackmailed and that her secret lover was Roger Ackroyd. Then Ackroyd is found murdered and all the members of the household stand to gain from his death. Hercule Poirot, who has retired to King's Abbot to grow vegetable marrows, is reluctantly drawn into finding an extremely clever, and devious killer.