Peter Ustinov stars as detective Hercule Poirot in this classic British crime drama based on the novel by Agatha Christie. With David Niven, Jane Birkin, Bette Davis, Mia Farrow, Maggie Smith, Olivia Hussey and Simon McCorkindale. When a rich heiress is murdered aboard a steamship travelling down the Nile, Poirot discovers that almost all the passengers had a reason to kill her. Peter Ustinov stars as the Belgian detective in this star-studded Agatha Christie mystery, set in the 1930s.