text: Poirot reveals that Christine lied about having a fear of heights, as she managed to traverse a suspended bridge during the picnic, and foolishly threw out the bottle of makeup from her window when Brewster was present outside. Linda's attempt at suicide was provoked by Christine. As further proof, Poirot reveals that the murder of Alice Corrigan happened in the same manner – the photo from Surrey Police identified Patrick as Edward Corrigan, who killed her, and Christine as the teacher who claimed to have found the "body" before the murder actually had been committed. Poirot goads Patrick into a near-violent fury to expose himself, despite his wife trying to keep him quiet. With the case closed, Poirot tells Linda she did not kill Arlena and predicts she "will not hate (her) next step-mother", whereupon Kenneth and Rosamund rekindle their old love.
  Characters
  Hercule Poirot, famous Belgian detective known for his magnificent moustache as well as his "little grey cells".
  Colonel Weston, Chief Constable.
  Inspector Colgate, investigating officer.
  Sergeant Phillips, policeman.
  Dr Neasden, police surgeon.
  Captain Kenneth Marshall, in his 40s, Arlena's husband, responsible, proud.
  Arlena Stuart Marshall, actress until a year earlier, Kenneth's wife for the last four years.
  Linda Marshall, Kenneth's 16-year-old daughter, Arlena's naive step daughter.
  Patrick Redfern, Christine's husband.
  Christine Redfern, Patrick's wife, tall and pretty "in a washed out way".
  Rosamund Darnley, fashionable dressmaker, Kenneth Marshall's long-ago sweetheart.
  Emily Brewster, athletic spinster, rows daily.
  Carrie Gardener, a garrulous American tourist.
  Odell Gardener, Carrie's patient American husband.
  Horace Blatt, large and too loud, avoided by everyone.