The second movie in our Agatha Christie film series is from 1981. When noted stage star Arlena Marshall (Diana Rigg) is found murdered while visiting a posh island resort, famed Belgian detective Hercule Poirot (Peter Ustinov) is called upon to find the culprit, but given Marshall’s shrewish personality and propensity for making enemies, the question isn’t “Who wanted to see her dead?” but “Who didn’t?” The suspects include Maggie Smith, Roddy McDowall, James Mason, Jane Birkin and many more.