Hercule Poirot has retired to a country village, until his neighbor is found murdered. Poirot reunites with his old partner, Chief Inspector Japp, to find the culprit, exposing a web of blackmail, envy, and murder.
During a doctor ordered rest at a resort, Poirot fears a fellow visitor may die, and a woman is found dead. Poirot becomes involved with solving the mystery of her murder.