In the post-war climate of the late 1940s, an ailing Poirot reunites with his old friend Captain Hastings at Styles Court, the place where they had solved their first murder together almost thirty years previously. Styles is now a modest guest house run by an elderly couple, and Poirot knows that one of the guests staying there is a heartless serial killer. The suspects range from a chemist and his invalid wife, a dashing but untrustworthy major, a charming aristocrat, a melancholic middle-aged woman, an unobtrusive birdwatcher, and Hastings' own feisty daughter. With Hastings' assistance, an incapacitated Poirot tries to prevent another murder from occurring, knowing that his own end is nearing.moreless
While staying at a snowbound hotel in the Swiss Alps, Poirot is faced with mysteries of Herculean proportions, both literally and figuratively, as he pits his little grey cells against his fellow guests.
Ariadne Oliver is asked to devise a murder hunt for a fête being held at a Devon estate called Nasse House, which is owned by the affable squire Sir George Stubbs and his childlike wife, Hattie. When she realizes that something is not quite right, she calls upon Poirot to observe the situation firsthand. The great detective is unable to pinpoint precisely what is out of the ordinary, although some of the people associated with Nasse House are behaving oddly enough. On the day of the fête, things appear to be going well, until several occurrences end up fulfilling Mrs Oliver's initial premonition of unease: the arrival of Hattie's foreign cousin, whom she claims is a dangerous man; the sudden disappearance of Hattie herself; and the discovery that the young girl playing the victim in the murder hunt has actually been murdered.moreless
As a deadly game of chess unfolds in the wake of World War II, Russian grandmaster Dr Ivan Savaranoff meets a shocking end, sending the public spiraling into panic, as suspicion is cast upon Peace Party stalwarts Abe Ryland and Madame Olivier. In one of his toughest challenges yet, Poirot must work out who the villains are from the good people, as a complex plot sees a host of international figures used like pawns by a gang of dangerous dissidents tagged "The Big Four." As the murders and disappearances stack up one by one, Poirot is joined in his investigations by his old friend Japp, the dogged journalist Tysoe, and struggling actress Flossie Monro, in an attempt to snare the killer and shatter "The Big Four" for good.moreless
After an unpleasant encounter with a wheedling busybody, Ariadne Oliver asks Poirot to delve into the past and solve the riddle of the murder-suicide of the Ravenscrofts, the parents of her goddaughter Celia. Ever since they were found dead, no one has been able to ascertain precisely who killed whom. As Poirot is already preoccupied with the investigation of a psychiatrist's murder, Ariadne sets out herself to question people familiar with the Ravenscrofts in the hopes that they will remember key clues to the solution, for at stake is Celia's future happiness and the memory of a loving couple whose mysterious demise shocked and baffled everyone they knew.moreless