Poirot has always hated visiting the dentist, but this time his check-up is painless and soon over. As he leaves Mr Morley's surgery, he observes a woman wearing patent leather shoes with large buckles. She catches one of the buckles on the taxi door and wrenches it off, and as Poirot hands it back, he is reminded of the children's rhyme 'One, two...
Ten invited guests on an island… Ten strangers, apparently with little in common, are lured to an island mansion off the coast of Devon by the mysterious U.N.Owen. Over dinner, a record begins to play, and the voice of an unseen host accuses each person of hiding a guilty secret. That evening, former reckless driver Tony Marston is found murdered by a deadly dose of cyanide. The tension escalates as the survivors...